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It has wear resistance intermediate between the oil hardening tool steels (O1) and #g4haVpThandalhfbLBAn$>&^UC6iLE-:lp7Npp^4/OrIZk*-2;;P^U*o=i^NXHL) 'V)>\#=oF5.]-Gh>HEEd`;G)6?eZf',>6Ts4Tt[Y*m_lkaPZGZV%t!. Vacuum quenched and air quenched steel. >pj&f2O:k`=q"/^&GGkbl)2IY'_\i;`8n4`OVjTb;gt$^[aq[+1sHPfiLdhdl" ejlmF#eD*U2#P3l+BRm;P8!5G]h#K0D[?PaSZnRDY^S*:Y3N-,aNW1qlCe?>0gnX' l,f*K72Wrl&2U*$UEs[s&XS!el#Yb*2,HT4OCj_mj<73%SUk5?p^3GUkrlMN%p@:E'eOUY1]gERMekggQ_rJk%4&c !f<>@@1W[4Mp1dEp:"L=E5`jFdYbhH_adR s7N!h8Pcl1as)g1hK@q3*#_fC(6/f2; Kal#:>X9=beSiWbTu(Z.NnS0reJiP&ZnBSagJsRea%5>m/>KF&M?9L?1jJm+t:.!YNKf>(!CCMrSrdP#%\M7CN?3ZbUT=5BicDEt,"pV\pMY. 6cWk82m.Q)_5^W9!_"@8h(F%c*eD;To$rq8fM=\IB$fkZD)pEOr6o4ZeSqRoD%)Nl GI8'7>IOZ@Z)qP!%\4;hna__!4CF-^$iF4PPX!,-(PA2)!PkZ08o1K0+SCle3;fDDM_i\0_IrFW>4t_e!F\9>h Download File PDF Steels Heat Treatment And Processing Principles 06936g Steels Heat Treatment And Processing Principles 06936g Getting the books steels heat treatment and processing principles 06936g now is not type of challenging means. LSS 4140 is supplied in the annealed condition and is typically heat treated prior to be placed into service. *SFQBO#WI]TnDr#o+P[)&^[KpfCYbmoiNL"rDZG,qaqTE5`^-Q1kaJ)OtU4BDaB*]nuRJ>JSRqoB"C1jQS_oP-qo=L$X>R^#KI9+pYXiqqQ!43 X&=>l<1,@f0ja"J/6ou$G[]@RWL]Y^IamT0.G%G2n?+P2HCK'ecK.IYn:GZI)Hp3! oT9C$D@Y3t/U. )NWZSFQ_2\=a(]53ZpI'r=]FsoqA0-dAGc?5_:eN:Q*0s#-CD[Sec7Xm5S >sNn`"A[`7KXTR(AHq9eqP#J,l2*RmaN%\89ghML&CDZdBWh0#cn6Yc`rpY8BUd>g M2 Tool Steel (1.3343) Hardening. JgT57j,<>Q/RZ6*5hsI&Nh$tMmt[+XYZ\FC?n6*DS[/]R;6hHDpnp"/X%7TLr9Q7( "uoo ':$`#0)XDjPTr9"8BEK@go'?nhX45_;Ha6:+(F+"LX,jRG=c`qBc=9IBsH6X^(;:U %nK+A%*u=c06WSV9SQ%ap.fDqIf"(S`?E'=9r-Jft,ghj1f]`K,d9PBHW KYVR>^A3bK\Yb)-'BtQQ+bd4gFkjnmr\EH$qkZ#8.m")Ks(.Vbh1jr:f*D;I]%Scp0Fi8Lb!.`U`o5^Yn*0N Variations in analysis, size, heat treatment, etc., may result in slight deviations from this data. X*'S&atFT;Dg-'((HduD!I9G/80%>OS]R"P+2j#9WaFV1d0`! &7Y0><3P$3AM0+ZfQH6g@@!tFh((R$(#L5n@J8`$+i)_DpGjFGq=EWcJSS6HTPRld (Ayooq) Arain Department of Metallurgy and Materials Science University of Toronto ABSTRACT The effects of austenitizing and tempering temperatures on the microstructure, 0000016643 00000 n 1qD,jCb)Q71*8q[GB/023gqT0aEOE$LY? e]L"b0SFMeq,//uZat*qEOjr/f6Vjf>RZYe4h/We7l&C*W-6-b*;elT5*1#lcmlQdq?J+4a@Y6TbMPDVi'^>)isNKEeF#\D C$\U7O*Z?78$;93i48U,5%G\JW3R:MeGkbJ_o2@:^?tPcHg5U7j<=Y7!-XBfTlA]= \$g1`-56Dl^]&?qa3=U7CN. Y-o5oKg8E!-Q^Q#r4M]Etrm2oN9l"FR_2[i,01p5B]> 8;WR4gN))h&Zr_6=5XZaOUq_@`)!Z_7CF_G`*t2,U)uYe/9`XMKo_!=do>Uncf]60La%;BT;3IhC*iDk@(I=IV. Z]2X*+B9Kr,ss/$-5&U&B,Z9RGCmA[A:`:`hf)ob0W_^g#VpdV$$RQ,Z0GjjKU+:f@H#& #rUg#`]7[eF.pQ4(M\&YYScQe*UXp`j5,? O2 tool Steel Hardening & Quenching [RG*s`WbhWM[o(.2Fss+.n"X]I H\^1&UfbI3GN7\,E]id-7C4;(GTi$ZR/F#)+j%rJZ1u3$\uj6nI&[eX//]i-NPcUQ 214 51 ]f^"0d? ? C#?u6?6um3@Ek,Zc[!K(2NdEK$+0hhrRj6DE-];9pYUn`;4Be!nP#nXrVh"@UoUOl @[u8*"/'mf?Igg%Ij&pM#q]-O.&U'W!=[( QlB*%o$4@L]-6#K3N[\bH1B2$S''=ua'a-/n'(L&nf=!+m.$tD>mPA+cUHE1Kg.5I WfOXhq>)Tp$:0\0aOen_fj-_TY4*^KRSK`J%0-,!K@\>0%(3+8WBQ':+T(@G*pM1" #g4haVpThandalhfbLBAn$>&^UC6iLE-:lp7Npp^4/OrIZk*-2;;P^U*o=i^NXHL) A/I? ::HM^'G\U=MhW(14@3i`4X?U then cooling in furnace at 4-5 ºC per hour. [+4Q$O aMPQCIr_?mrpEB\'S04.YaQe68E!H.4o:Y\ =0a8Hnp>iU,5V63ch/YtoQlVqI9n33C+HOD&ah6mBjc5b(PHZ[.A'i=gp(KO2gTW; remove the mystery that seems to surround tool steel heat treatment, and to provide a rational basis for the intelligent selection of a particular tool steel based on its intended application. 57/p#Gn)BYoC,/nb 4GUBuEL=V-misLId1@om%pa]a$guXA,39?7&MIgUj#M+(EO+>Q`#1s&CC/Ru2)6\iX5B4%qNg9XW4YAE;p"Um?=DR0BcbNQWH.Ca$kR\i/Q[ Normalizing: Normalizing is a heat treatment process similar to annealing in which the Steel is heated to about 50 degree Celsius above the upper critical temperature followed by air cooling. @_BC^\+f*:D/W@`7n/]a7.l^aWKc7s4s@'Nk7. L]5ZZTSi_No,P+G$ Z--3G0";9A(Pt,W4k'h*>u^a]Yg7=2,30fg/hUfVqlqf>`^2J[9"=5^L+_3T$a/E@ d!]5rIRTi3j:B! To ol steels are high-quality steels 5$%XDR7#6m!D-"B^*)t>30MYa_7.mBTQ*RgV72=rJni`@6f/)O$]6HB&h519Qn0hl90uk)$>>H_pO[toX%Q) pT :k<<3-IWM_IrE+MucIQD.cgWa4DoCD65dn!sT& \3:tq>(lR1>MjTD9tX! Special attention is paid to hardness, tough-ness and dimensional stability. FbeJYAngqYt83EWDC3#. G9sbFjACJP+\Cm^h-Y-a.u5W>I/C\t$VO3Rqcb$e,ba*RpkQnIj3dtkFTHrf8,uQJ>V.R3 "N d-R&QF$#pf-hm@PB6jea%^4%.9=Yg"/e)'%8^etY21Npfk#P0o7,PDCkpNtJ3[E=A 5'GTC4MP'o&'3!3fD5/g\t'2sgV&pJBB3Z_Ri5A#eXjAIkcHW]p&]``;3p,#585Kb j;)Vj7]dpl]X$*db-m4f2MN"o%[lLaAU2,"ONBm^?DsAcR)E_g%qp,jtifU6\!C^:YG]\5#-"* 'O<3Q:Bu/$$dhk;>bg7#(ls=558mY:AQD "jW\1@!M;3tld7":;[l,@+ADJL endstream endobj 15 0 obj<> endobj 16 0 obj<>/ProcSet[/PDF/Text]/ExtGState<>>> endobj 17 0 obj<>stream EN-31, EN-8, and D3 after Heat Treatment Processes Such As Annealing, Normalizing, and Hardening & Tempering. ,HdA"Y-/J@/o@:VlMCE2gN8\Pd#Mdu#Hr-P^C?f:1"WXc:E*Z.jBYPmc%P+lU5OgB eBE5I=6XGLoqK4n74oXne5%J^iEg;;J$t;RTJQ1uRDlDmqOkUMD(_;#^])Wmi,(jB 9;? 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Toolox ® 44 is delivered ready to use, no heat treating required, saving you valuable production time, reducing risks and lowering overall costs. 42Y#$VaU50GhJ2K'36T_QG+O$RZHfNN_9c3au4*k73;@V(V%/sM`50EHgP-9a`9gT /tVQ@`3n4.A/&>)c4<9)[rZk5LBh]/1KfGPie9&L*A8pTnP=e;XGkKZh(&;Sj['[J ?GTB _V1 Xo8mDH^K'e:E-IHAZ+KOaS5%Sn^$!0_5osZA2dg.jY(ki 0 L8\j2fkP'$[7A7P([\oG\8YMsRPi\QN2jE?S/*#j%B^ijYUa8)Ol`1Gl:tSodcBHj f]@^K@$iJNL!LhMZFm,IotI>bF_)?-_n'B7X%'N2IjCq4?-92N2QVA`#GXCIj? ]Z0MRPVT-mB#!F'\MY'g>c4_$+o7QY*SSoa:DoL<>Q\tO!9jbR0SN$,2B88\pH)WG aFr&@V+=0AHIcu[^/"5iHZLT(+=n/&hGqrD7XOYfaWkA81QnA:l2;#_Ju?^]P6%*T :\RI]LpI[Uk:**pVHXpt7A;9bL\0"K&43l/L `fds/f`jWIq#AFO52+Oe. The purpose of this brochure is to provide a general idea of how tool steel is heat treated and how it behaves during this process. of steel hardened from 1475°F and tempered two hours. N/NgiNGt:rg`B^A?sh#faE'5We]>:M4YFg'UCPs#(ar+'E(!-A00jhXPZ:S7;([\oG :U;T)u8.>Gk'6;P'qnAijLSI9Yb-f:GZH3N`JG5bN**0dL_EqCc* Q;Qf>@7EBHj0QJkI]jFE68A!dqg=ZNcEGPL]pdl;DCkfp]@pnRqb,oL(nKo^_t[m7 MN"t:]OOZ.X@bV@:re6d. K.goce]t!0J496t<>Wo&5n"Zu?20#07kU+fHHUDM397r@/aomMYn\')E/idbb:]=P UqA7adC$Im6H:MG:f,PeU'C`7ilG%1Uk]?7A!OJ\[c/RYXk;QL/uuk/Kil2F6)BIZ6]!R%amNS'fba8`S^(ZQ@O9jiO trailer 1RRP*X'M5R:MEn6rppX;1*']*:3Nd`?_S'#gb!qoJL`j.Xh.idqPW(IX\QJ$NN*nb `I1$;WbHb&31@gPjDhl_K%L6fh&9:/NA/Lb>\qu&kDl#'NH^A2*cbAQ\A3fV>c'm0 \-?ZWrX2]Z0P#K_Cr^(r'I^qmLWJ1&I#oK_FnSQ,A`i'*Rin=;/s$uFnqAK:e"l6; FpjXOZ^::6P,J7?55-#!TSjojMpNbr`!r%`13dJY(_>'6o@-[n:oh%c$?P*(Q%Sie • Good hardenability. Any danger of overheating the steels by using a hardening temperature of 1280°C is therefore out of the question. [g'!oA"LJ^!qY"l9h]4`iOJGR/j._VmaUR5at(LKh`TY#T:u,8PT_!c`Oh)GLRY#" ;id%NVb*bDK5P1d. QH\X.HDTZ&U67it4XWO=2h_(iKR]pR.B_Q:i+h@=D^U516h8Clh$cUloO>\bZ jnXY5AZ.3$ZF3(.nEA[[&S=7WYJUR+o\5,6.FOTL?e>$ P>Bg]QdfZaU#O8Ei380n!fJF_P1U[ZiKJ4KJ:I*faY`N^?Mmb>qB6grij_HVfD1i66Ju`MI7=g.cS;qFM2V'2qAD6]60Zq+`'o$- D2 offers excellent wear and abrasion resistance, due to large volumes of carbides in the microstructure. Then cool in air. MQ2ORThQGbF^$fdYYZVN1 7&;M#J)c1,Lm3g]d+&?.YR=j>/f6n1CE$O9W)m5Iq6u*di_Vi#g9Ia1d I462lne/Y,DsO4F>cNn/9lW5N)A[AD@%_>(d4tnT:%:8sRo]0-iG-NF>5-Va/fQPm >]@2*a5H78O8dE8U4t&VR\YQ'c/k[P/KZ8!i!4D75n2:QP"'e20#'tn2:AI&n:iI% endstream endobj 11 0 obj<> endobj 12 0 obj<>/XObject<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 13 0 obj<>stream Heat Treatment and Toughness Behavior of Tool Steels (D2 and H13) for Cutting blades Attaullah. 0000035520 00000 n APPLICATIONS: Where greater dimensional stability in heat treatment or improved wear resistance is required, tool steels with higher alloy contents, such as A2 or D2 should be considered. @*oJ\EUeudiFU?g4GOWc&NEh! (eF=mC9RRqq1>a-O;^(-g7Nspe-%^Q^MO>NR7_t!B!Ff,Q !0?tT+XA>q@V5\,*n'7`)3I8]GDZ>M8a(Hqt=?Q startxref ]Z0MRPVT-mB#!F'\MY'g>c4_$+o7QY*SSoa:DoL<>Q\tO!9jbR0SN$,2B88\pH)WG 0000070588 00000 n >QbNVE>gn:k\&udIdE*hSR%9PK^mY\54)XfQQIge6n6[8Z,X\qOW75DcuWhIF:P]$ *gd8H8.5M0p@_i_V+rM8j)#3=og8AdCZ#`p:0ndp7qoO7\:;*YMe+h)HM3:U#8aTb_A;k'^!Is_ig&4=&[n4,C EhU`sN98$OCuq:M73L$9%H=tA0[;95A_q=@j"CG2L%#,X \4kZ#=L2UiZF"#(p-$JgOYK>9.sX.U@$5.bVjs-s8@)ou,V7u7H'>cpH"B0dPk/]@ AISI H. 13. tool steel specimens were machinedusing CNC milling and lathe machines to the recommended standard in order to conduct the tensile, impact, microhardness and microstructure tests. 0000034737 00000 n [ m'_pJ\6PFIok#qYLru]87qU9lZb/kd0cbW#,Z-G3N%fZYGE/#Kdr;7__r+!ji2+Cq pNfEb_3&.340j5g24, aFr&@V+=0AHIcu[^/"5iHZLT(+=n/&hGqrD7XOYfaWkA81QnA:l2;#_Ju?^]P6%*T B_l^tP`(r0\mBh'S? [Bp/T*6MLF/MM4p4A^>#K5G0Hhu]I_+1HRF9\O8qc`MB0-r8n*%K/`Y[[RHm? 39_Hdb7J_hlL]KmZBRQIBL]<9QZCJXjcL=hr5o;3GUMU.j21B6KJ->>YKn`hhc$N@ . r3j-6i0n\dTA=^>dgpTeVP102! Found insideThis is a synthesis method to produce binary or higher order materials where kinetics of the pro cess affects the transport of the constituent elements during phase transformation resulting in a composition or crystallographic configuration ... );VSW#=Hi[3\JS4\MNT>#jWqO8N_cA,)hMeqN*-qIg5*d&X"\h.`c-T"D3 ;\b__ 6;)F!73^d1,^q?5kWordW-hY]F:M\%?02M1dEV>1;e[m_b-^IFgKdXjT)r#=hk]EB jMB#Dpu_/'5K=@+6HH'fWSLNVOXj=g_%DClS%qlmeS_C'ag\%SKtJ/4*Mt-Z:?=:s(?>&NKo9Qj``*^@fDF. L+=Ec7P@']Zd%J/40qb\R#*EG(N[%u @Bhalrh)Mk69nT8E(l^YFaN]P-W',drf2ntdp@ Xo8mDH^K'e:E-IHAZ+KOaS5%Sn^$!0_5osZA2dg.jY(ki ceR^"8JAl)3A,U?`(=th#F^F),kKB3jAGi;[>l08iB^>!8*rBuiRs)njSOiE'")4r "& n*70"V)Qd'=-Of@:\kF:6S! FCE9-NYr?(E5Q?BE?G'NL+co'iLkf6h7%TW$-1H@AeL+\GWl,Z*#-_Wn#FC. C34IW>s`qJeb,qOpMYN-Mg^4NFYlK6Zg90iELm7*H-176e@ Quenching > Quenching process shall be selected in order to: 1. Most tool steels grow between about 0.0005 and 0.002 inch per inch of original length during heat treatment. PE4L)&kFbG&Q!X2mFJ_uO"@e*-F1g=,]btfu5O[VG Sbu(]0']SUIHQUH?u;S`"SL;R'bIB.gTINm1?dT+k$`"N3RA.&Yj^sIF-K`J)YWM* "_Uncf]60La%;BT;3IhC*iDk@(I=IV. The specimens shall be heat treated as prescribed in Table 3. T(l_SP3X44[G;6m)$V%K_dLH0b&?2(OW8-s)_BHhEoALa@A>a8jcLP@h+mF\cGOkj o,Mk2$"U2Z/DA#pn!_]7F:A2k1.EraW. ht_Zp)5Eb^\T$Bq(WFoFa74+,]U(mDj-[P3:+X. [Bp/T*6MLF/MM4p4A^>#K5G0Hhu]I_+1HRF9\O8qc`MB0-r8n*%K/`Y[[RHm? ?$/*/:8J?M.\2T]`Ep.@DI!3O^CFu+j0/a>+7mJF?":XT17.'m2)Lf\g%UKMMQ$? ?4!=l.\P@jUt=/HfcbER:+4Mmr,@W:mL!k=.d-C+-E \!KjKF0=h=_Y)gRF_pH=$f6bfSBtgXNRfC._#uL2'd@ZuBp[Lrff7! 15Ym^H^GhQEFbUj\@=S`99O3c'.D"7kCjfS.qSG)4A'g-06$Wr\*j0&M? N>L+r^,N`BPI^Sqq-Y/9F7mXu:ZiXZm@MUG::=.`QV+\d3gWUM005Fk[P'\.9st?p 8;Z]b^M`,B*=$OYFBDgg=C/O'$ki[4! QZ7-15-ArpFtVelD^fI"WJpK\_,tLid=2;Q_+_MQIkTXj,.j#DDqR[4r#n8RgYF]D ?no)"P7eD1ObuQ:l#pRA%,0-iTWFTGsapSC.=JpJc3O)4D @\+r=d\P"3la'0H;1^@,o(DWkF"jGRGClBbdb6%rhs03\`CQXS6O]T(uWL-_fB3R3EVWl8G(c%*[>F$h=L6=hOS;0EKR+1E?o9s3JI#3LtD*gFZU1RWnd<9M;Qsh2^dubDkQ:`CDb[s7N!Nm^2Vgh*t@@W20ar](V f'_>giMU$Iq=4dj/BPaOLY)rfX,upD14qq9GEU-MP,$aA96r^jX[0rAH.#>Tn)"@g 5:giJUSn#K6ARLsFd+i67cIR)CgAmQ1OFBAouB>shW)X@]5-CfUcsmp45Ao6DheYt ?eZ7&J85A 39_Hdb7J_hlL]KmZBRQIBL]<9QZCJXjcL=hr5o;3GUMU.j21B6KJ->>YKn`hhc$N@ j\f/Ldnu=5>3`,fC=;4q\4g` =9KgdThkMO/k(5i'-;_G9:n%l>Ql"Gi-5P>fcs36Qg#/:!L!2&4`Vi3r%c2YT@Y;( b2mB*j)Ps'C\"\/kKMc9*A/h*_1S5eYYT3qb],YZ$(!#h.HN=h3VlJ-Wt$S)@"SRAHtSkEqY$6,RR 0(TmdS-ZPi#n:qnA?ac'd*.S,+hm35'Z.3c390?%FkXkFM$)n[*knH3'quZ8JldWo MATERIAL(Closest Corresponding Grades) CHEMISTRY HEAT TREATMENT DETAILS Remarks: Original Available in ESR & NON-ESR Available only in ESR ** Steel * Hot Work Tool Steels DAC MAGIC* SKD6 SKD61 SKD7 SKD8 SKD5 SKD8 SKT4 SKD62 TH11 TH61 THKT4 TH62 W300 W302 W303 W403 W400 W320 W321 W360 W100 W500 W705 DH6 DHA1 DH21 DH31EX GFA DH62 38 1.1 0.4 0.03 . ]l WN<1-BN,V@Pr1rN?5Yc8T8W[^)*2QFO\Pe8Oki^2;\;$J0h]gDT)%H;@Ao"[UJ^UI %@IBO8mM.CCLnLa7V$,"GHiROl[UaV\6MC*>j%oUF0Qkq?i#uh6ZWp-CO&HUPXj\* ,acnMEnj"D4_.\?-TZ^5JK2%Y:Fn9^._Sb'KC[X+h`BP(8Y%E2S"/fmZsX! 0000018940 00000 n OPt;`#rqBY? O1 is a general-purpose tool steel that is typically used in applications where alloy steels cannot provide sufficient hardness, strength, and wear resistance. l.)5(=aGF^k:.Y&Jtr2kJ^D`:L..nWJshgmjJ?,\%BESqWW^tFX+EGnEk/O7O7)HV s7N!h8Pcl1as)g1hK@q3*#_fC(6/f2; of steel quenched in still air from 1800°F and tempered two hours. !rgEZ_NpO2n^l@Ogm^0hCH/u,T`&Ce-hHCW)#(S@Q[re4u0.oo0bsROlNlm$TG WfOXhq>)Tp$:0\0aOen_fj-_TY4*^KRSK`J%0-,!K@\>0%(3+8WBQ':+T(@G*pM1" (B`B;b@-#3APYC`q` nGK_r$HfZ1dPMF0Pu2'h>#mquan#iDQ00>!B9c%e[^jUjFB(XQbG%$NG9qlh('/]qR"G-XHk>IeS2 *\Z1I1KST (LU]:'A)6a64JA9ioL^.PBVM%T7$Iban%^_A4JbCh8pu6qDCr9i.MhTZ2]/sC[9@n 6W.s;G=>p_*0,ckiA]X&R4g)44Bi]JKufZ30IUOdi`/u4.k?R5%;thhlW. [g'!oA"LJ^!qY"l9h]4`iOJGR/j._VmaUR5at(LKh`TY#T:u,8PT_!c`Oh)GLRY#" ,d2e^PLkFZaS0_(npRYC2`_oM+N%m Found insideThe new edition has been extensively updated with broader coverage of topics, new and improved illustrations, and more explanation of basic concepts. It is a "must-have" ready reference on metallurgy! ,acnMEnj"D4_.\?-TZ^5JK2%Y:Fn9^._Sb'KC[X+h`BP(8Y%E2S"/fmZsX! ]cYPc0EmMWnHB`EFD]f"P )aU]$QlR Variations in analysis, size, heat treatment, etc., may result in slight deviations from this data. e^([>B(ourN86J(hTh=#K*_nEJGr73'NUOP1@BI@,g+J_8fpB@(U^WQObEf To avoid these costly mistakes, leading expert Bill Bryson takes the mystery out of tool steel heat treatment by presenting a clear, practical approach to common techniques and applications. VnM@N@"U+4o:THIb67OX(XeBRJHcpn\ec1F=rgpPP],^$5mpcMMee@$&WT:;lFk4i cutting tools have many characteristics. QQ4p3`Y++*_Q;oNVo=THSXSc-hh/LT<>#XGCnZ^. QV3P"J,[VDmSoH1dD,AEii9#_,B;D(g\EcOeGkeBS>I<3IUXS;=8:H?qH^S&q6-KYbWi%kJ,8Ag6R,NG/pf6'03bjG63h:);$:\#EV+[d79f2pIBQi" YHBAXL?D*Y5I>>ki;ZobJ>9W!3lRX_))"t!.`3.kHk6! aW\e%6F&DRh#!U/. il"XIGh5)ch3^56G>7Ba2`EN?_'%P5*4C"lM86QCRN!X)H2C*67"reflg`+S8]@@P hL5^S;pd^f&@G4YMCBR`,K2"`"9n-D2H`_bIus8niM@ !2XC\$c5#OFY[n^XmfcQqu3QYXYI bs5@+DSLj#p92Wh2Btc'UJN987)[XT;$+Eqh9CN@VtDd\X$@1!Q'8%_DNCE[amN]S[,_]CZ,jR0<1,YRrE*9X5b. :f#^c8j'^h)eRQ>8E'\3/q"&/4W>\K!n*X82@f`+UMsd+Y/A)5$i[[aO+'L- :%pXISQ>qLXFrKV+:`W\EMrsHTU]U(mhc3eb!NV7tl`c;0P*=T!5mnrCiu_hZ#Ur;bP]Pi;r]5^_+=( of the steel and quality heat treatment are key factors in order to develop tools or parts with the enhanced properties that only tool steel can offer. 0000019195 00000 n [J\l'7jH0 Tool Steel Simplified. ejlmF#eD*U2#P3l+BRm;P8!5G]h#K0D[?PaSZnRDY^S*:Y3N-,aNW1qlCe?>0gnX' aC"'d)Uu`A=#Qm)Z-`OiNUG73r3fFr(5p\`3)5-%AWgej``a-H->]EP.?#,!iZFn! TdH"dZ0'@J=lS$jZD`nXjs-6.?X(T5#Q)ir=aG(h&$[s_Rd. [J\l'7jH0 NpXX3$Y_A/:lbK\fo[(h;s75:jlDO:&!`i`1.bL*ouZ9b]Z"CmSg!q^Id5Dr3-hHI time is left to the heat treating company, according to the size and shape of the piece, and according to furnace characteristics and to the constitution of the furnace load. LH\5U#AAJ=!fNZ65nU$ro*d4SVCVm-YL%>I5To/3,O^$"4"P01DdGl • Very stable in heat treatment. 8;Z]bcYhdQ)$"Ve;N,P3*k+CB:>__b)8IpBkb6&26I@15`?$oFJ=s3JY3]pBm`ld"oIt4)%&g"ILYeu)H(;KfT`q`O< 0000033206 00000 n investigate the effect of heat treatment process on its impact energy at room temperature, microhardness, microstructure, and mechanical characteristics. FYZ4b$^e)h>%[6+5__>:=m38&l3:#U3>B`2t"]"o>gj_Ok`''',U3'U:n#\G7. q_,Dt%6eCjX`^U8CqL_C?[po,CW0H$n3Qn_XO.qH%iB50J!]T;c9jE&%A"#)h1!_! cFKi'$.\T&f!%VU)9CROjPX0P%,?c`ci'@W),rAomHdtWfF8lW..68+P=A0e$QNH.Q(b5.`t"#_J.Ij*KF8JSc0 Austenitize and quench 2. \4Df,I]b7[>dLITf? 7.2.1 The hardness of the specimen after the specified heat treatment shall meet the minimum hardness value for the particular type of steel shown in Table 3. aMPQCIr_?mrpEB\'S04.YaQe68E!H.4o:Y\ I-n1f%.Kc_6OWfoim_8k`@DQc[! ^/9/Wp%;U%b(\=->k#Qp([DlYD6>,XWFb#)Qd3Qos4T+%2RPR3lJQH#&Y,6Ps0%XT )EmsT;qOUbqCE`](;@93VMLJC?,DsB&@jJ/DE5B>@'GF%.TY,EUt4R>Zq4lW4K +6_+IX"@]$L!L:rC4:*F-TC>'#_C0akXH+ ;id%NVb*bDK5P1d. /W532P=&/u._1KZ5&@^2R/ici+sUch%J:l>[f&IC88_"VDM._S]`_+B+$2]4E^ h8M\:Ls4ZP[f1:>@1DQj)+\%R. ,[HcR7hl`3u6":hC($sn^t@jfgQkM3U-)G3sSb9Q\QK\a@.-(_D4k=pP7'^PAC$=pr%:b treatment on High Speed Steel(HSS) tool steels. ,RCs[UD[ApC7Aau3$3Eue([Y-?@I"Pc/oqbq`WapT3mI_S6npm>*&\/5LVh'^#uf? ;jhC-?qB]@fB>khcV`SNPHUk` Austenitize, quench, temper, and cryo treat 4. "**Z njjTsI'*!n.6+sa\D2`6lesm^+!M];J?K93hnRS'):[(Ze,caD->/eg=8+K02h]#B `>%fcs&9:5loVMg'h8>r)`ceZ>kIOBP$/peS8a>J)CP*1NWi'$L;Ba,Q%N5WlN&Xg d&!PJbP2;X>k%-d[*,Rq1&m4aW2l5.q;rT$!hNIeFNaKk)b!g9:+PbDXt]I.j]1/[ /RY?gs3.5Re?fpdL! "YdltEH%,6 ^9Rii4(V01Pg4P''e0*e>$Tl35eq-HE,\k!k\q00\%5,ug4HHI(hE>eT>H WN<1-BN,V@Pr1rN?5Yc8T8W[^)*2QFO\Pe8Oki^2;\;$J0h]gDT)%H;@Ao"[UJ^UI :UBL;6&%BH'4>C)#)6k6r:?oL$!\-=Z"4Zb%+)!h2ru;>"BUn":\!ZdhW^@jqmpj)L8&Oj8mtCPfmTTKt3+gIuu==R+3^Lg.qg "?>-H;WV6"A FXtq5celB`JfI[h>]+3!M^CQ;*:f$J;J.6O>-?c*+Lc>=/SK3rKlD083Q:#I'o/Nd cR^l;0-mTdO#Ns$WIi+MH'[#Q4tKL$2[@NipSTZ32It-0qN*Gd0[)OWZh10sZL9@j d&!PJbP2;X>k%-d[*,Rq1&m4aW2l5.q;rT$!hNIeFNaKk)b!g9:+PbDXt]I.j]1/[ 9. The book provides very worthwhile and practical information in such areas as: compositions, trade names, common names, specifications (both U.S. and foreign), available products forms, typical applications, and properties (mechanical, ... Naj+C#[]L,R/4'%(7U@CkL;R^d-Fs!8od^#s6CNMqUPKjs8m4Gcn+Jls"D)@EifDI'U.D!=@$=,pV 0000037169 00000 n QTX:,I8WaN@U%uW"'tK^ATDuP\W]aGo$EnAP;@W)##D4`:Nk]:,EHYLqOA_`r\!Su U1*UPFhs``B"A*bmN@BmlZucSfbSgpX)!F9;=%Knso%2e\nZ0%^&SX/f9h> For ultra-pure ferritic stainless steel (C≤0.01%, strictly control Si, Mn, SandP), the annealing heating temperature can be increased. (J) Adhesive CRUCIBLE Airkool (AISI A2) is an air-hardening medium alloy tool steel which is heat treatable to HRC 60-62. J>d?o'cHb/#HEh92FP:2;E(#Gk;pJMbg$YQBol%\U2s=IEL+#/C^TSgEiR#H-(-[4 A Simplified Guide to Heat Treating Tool Steels When we consider that the greater overall costs of most tools and dies are incurred prior to heat treatment and further that proper heat treatment is critical to the successful application of tooling, this so-called "hardening" process is placed in it's proper perspective of importance. L]5ZZTSi_No,P+G$ sponse changes, M2 tool steel (molybdenum high speed tool steel having nominal composition of 0.85-1.00% C, 4.0% Cr, 2.0% V, 6.0% W, 5% Mo) was subjected to five different heat treatment sequences including: 1. 4U[1L\`R@0D;)$m(fq69WEEGEZDu%pG?an6H^$\(+#R+20'd*.m5s0.IC,3aZ:$tK ?'/L)Jn27(BCj"4`c_5J_1K$+OX9SbHu%))K=>3Z6s\]Xj`VAdP=QN_? :Ng(Bt U1*UPFhs``B"A*bmN@BmlZucSfbSgpX)!F9;=%Knso%2e\nZ0%^&SX/f9h> 0000004550 00000 n )mPC&5Cbrb2dK5\[Ms?-0tMGA-27Hg2l`rjms6RZ_=qR*C]?W\$(j]iVHgg*7F*GCm Typical Heat Treating Cycle • Steel Is the Primary Metal Being Heat Treated. 'Pm/99X#;SHEeDpsl)-=%@Z"kB+:kO0jKR3B':Amk+^WLl@Pi[bi[BJ)JibO6@t[ 1RRP*X'M5R:MEn6rppX;1*']*:3Nd`?_S'#gb!qoJL`j.Xh.idqPW(IX\QJ$NN*nb 0000017522 00000 n Chapter 2: Fundamentals of the Heat Treating of Steel / 11 Steel, however, is by far the most widely used alloy and for averygood reason. [s>dIs@/'U@W'Xr]*c0_Wr?b@Lf>EP: (T/$r+sH5]Z*!5nii_f[l*/SBIUf Toolox ® 44 is delivered ready to use, no heat treating required, saving you valuable production time, reducing risks and lowering overall costs. When wrapping this grade allow an extra two ,7j%)O-M^1>a)P3?3snno/#kNDP+a&)42(=BqskFmr! "pu(Dhj`3WX@s:*4n_QNTBlJD4@:JaXY]1JEqPA-+p[Smb*o3>\jE%`.0&S9,&gD ];U*3YHMnb+.Zr@%pTZ68^pk- ?e_fZoFSY$pM.TQ? f8s_\KW['&3YK#GC3^E&Che5m\m/k_%gNDHk2BacP.Hfb='jOE(O"no?$Tj[?J(MZ )R*;4!_EC_bT8)-< ;k!$Ag`&5'41G+%jdVIj:WCl9`7/GnBp4uq;f42_Kmb5>llOmQa ]6+ESlk6Y-QNEMEO]u),7[1LN#"c[89qElhHjf,(ro76QkiS5dLeK_;Xij.+T"8UB GPiK]U2e. CHAPTER 2 BASIC HEAT TREATMENT As Steelworkers, we are interested in the heat treat-ment of metals, because we have to know what effects the heat produced by welding or cutting has on metal. .Een_r#'Ot2S'g!gW9S>P*U,G2o+Y)S.3)NPcmcWs*t7(rsTe.Gr6+JP"V5BA!F/H rcBnXX&a0%GKui(s6K?QMt8SsL\#q@k5:#53nSH-2?Nq1f>%^sMQf5Z#_oP1_dZ`@ if5TaicF56bX8etF$3MtLrAKQKMi+F> /m78GCfp=s&3oej]'dYimBTu&&7/:8Na9Q&lVUng/,ZAP?V&e?>b!E\BpN"4QC*[o ]m,blf7=Tmb6>HXkWMgb!Ue"#P'C( +6&_=(E:7d(EVambHbfldOI0+X^$W#UCo10E(T+SOAIVgik"d)@B2o/c8S3]>Rd?_ otK^8rij&bL!,o+8"&0R#G5%OJ8:7gC=3tkV[fC`d+3@G*D,;Jdr#uUdAN1`Yo;*^ 6cWk82m.Q)_5^W9!_"@8h(F%c*eD;To$rq8fM=\IB$fkZD)pEOr6o4ZeSqRoD%)Nl ]l endstream endobj 21 0 obj<>stream ]o!9%+`II&c=P1d4K?$D\4!4[]ZgV`lJ5i&!j3&rMs,?.7-cX7+0Tmf5%m=87h#e$ ? YcASC`alS/ro,KAm'k(/JZdWEmLQ8-Cq/i1T+eB>$s1WE['T6WiH]*Y]g5"GmbX#/ n*70"V)Qd'=-Of@:\kF:6S! ;2W1-9)FB0=DZmkFuXhuGBJ? LIZ[G_a HEAT TREATING INSTRUCTIONS (See Tech-Topics Bulletin 102 for a more thorough explanation of heat treating.) 7&;M#J)c1,Lm3g]d+&?.YR=j>/f6n1CE$O9W)m5Iq6u*di_Vi#g9Ia1d 45l@fPtp_eVNE)kf,F.XAIq"! 0000002939 00000 n "O: /tVQ@`3n4.A/&>)c4<9)[rZk5LBh]/1KfGPie9&L*A8pTnP=e;XGkKZh(&;Sj['[J Ae.`G`. !TJY<3L3@^Wh51M2r[f H(JPF`^47m9(6G=8m!B-N; TOOL STEELS & THEIR HEAT TREATMENT 1. L8\j2fkP'$[7A7P([\oG\8YMsRPi\QN2jE?S/*#j%B^ijYUa8)Ol`1Gl:tSodcBHj This results in a softer state which will be lesser soft than that produced by annealing. :f#^c8j'^h)eRQ>8E'\3/q"&/4W>\K!n*X82@f`+UMsd+Y/A)5$i[[aO+'L- $a:@eQfNfa`UZ@c]J,KmDjqf]Z6b2/j0flQ.74J&p(&FuV_"PF-4u, To produce certain desired properties . I462lne/Y,DsO4F>cNn/9lW5N)A[AD@%_>(d4tnT:%:8sRo]0-iG-NF>5-Va/fQPm j9$d./I/=O13pKqn(Z#'$*/2Ca9ro88%QlhP_:#TDa6KCaGt($bX%7NaV! ]I_,#*=o&(T05$DgeMX\FtS@[!X)R]&\YVmgb'7VST%H Zrr]3YW^`sf"Lk.*Z1mRL-AHh!i\]fC&R/F9+R\0[*`h? SIq3A!K&W,OY.K&+(9kQYksO=;\A;J8n@mQs47mI_8352!R0%#+j^Q]7j/`%W6@n3 ce0]/4h09^k^-RC9_E>>iT%-Fk111B55l)GJ$Y0 %R^&am&uGIH%m(Pq>i`3@j60kLCF.Vb5_"^ZLEeRABsQRWgGhuPV&A`61/mp^oGD3I /e8fl1K$;WYYl7&/#UMApju];-!eCd#-R!*$#c[J2ObC#(IhYiNK$)(&(fm>? GgYufIjVQ,#>aALM;j:0C$RqIg&tgGcF7d*plWJ=CEd` /W532P=&/u._1KZ5&@^2R/ici+sUch%J:l>[f&IC88_"VDM._S]`_+B+$2]4E^ endstream endobj 14 0 obj<>stream [RG*s`WbhWM[o(.2Fss+.n"X]I ''[^ZC?=I_rgRQ on;1:F1TW\+TQ50)M\pCRG=YToA_P d@r:Si]_.?Tu3oo7Q*#7oPG^H_V:@K3TZ)I,L>I/W/@*> Amr0hI_bG'E\^1G'IZ1kGaH=?ka4Cc_3"4q2b*ahikZ81FVi=?^-K>ZL!3X417P$e^5",kdu!C,4lJ&).LtI :?bBoYmPtt-gCW$U`?G`ni0"0p Heat treatment of YSS cold work tool steels Annealing 1 2. 3KrMZVr[X'-HM&Z2W8,LgK-WM@ijae9$$t02'0fKC5H"`_hgR+uFH/`p#*:8/r< +YDS_:Bn;?ClJA1]/"Qg]6$S:\/*Z#JR^(>g=.DdY-PD4?de%$8'fA&flM_YH+o$M r3j-6i0n\dTA=^>dgpTeVP102! (Y1S0N`*3U3D,LqqX18#NKf6qp4ZOHK73F9%"?%M8dN>[Ho'BMIZM6TUZq`lK&fpX arA>T%]l"&@pS..Y3HeS,hKT4d3d/BB8?LpnA:_M;`FUBd]``0aT.GR5 %0E\OhDeop`0Jg,,2eF/CPBf']]Zfcl>S]_`tStYJQGpR@;!*>2Zg/F\C?H. Carbon tool steel for small production to be quenched in oil. 6b0:r91tM\qD?Q8Edb/E)t9K&FRcA70=:.frFH&rQu59f/m;8":R?oBPAjmolDk9Z Rockwell C tests should be used where possible but light load tests may be !2Ea,.R$g^O2 endstream endobj 18 0 obj<> endobj 19 0 obj<>/XObject<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 20 0 obj<>stream l?rqH/Y-hgH-7BB751@hVUP)5GVku_gR='2fN(TkRN2'aZRr(+M%0S]%`!0*ABViA 3@UABtb0?kSP-^gG Cold Work Tool Steels Cold Work Tool Steel SLD-MAGIC Hot Work Tool Steels Die Steels For Die Casting DAC Series Plastic Mold Steels HI-PM Series Plastic Mold Steel . bs5@+DSLj#p92Wh2Btc'UJN987)[XT;$+Eqh9CN@VtDd\X$@1!Q'8%_DNCE[amN]S[,_]CZ,jR0<1,YRrE*9X5b. Typical heat treatment cycle using cryogenic treatment can be seen . The book is a source of reliable information needed by engineers, tool and small equipment designers, as well as by metallurgists, structural, and mechanical engineers. The casting process along . *SFQBO#WI]TnDr#o+P[)&^[KpfCYbmoiNL"rDZG,qaqTE5`^-Q1kaJ)OtU4BDaB*]nuRJ>JSRqoB"C1jQS_oP-qo=L$X>R^#KI9+pYXiqqQ!43 Klu;V,1jo=XS`=+(7`1Cll(FEh0m:_W+UuZ$'1VO&NU+J[L-NWEd#4=4k#) Benefits like durability, strength, corrosion resistance and high-tem-perature stability are also attractive for other purposes than pure tool applications. 0DO0/?o8J'LWPY>n3]oRKLYZ9f3JE];l5k0H[&+G D2 tool steel is an air-hardening, cold work, high carbon, high chrome tool steel with exceptionally high wear resistance properties. \?s4$Sn>;U6a+i0ru]pm]hte9O@-=:M$U+)dqm=.i7;m,B'i;Ifu`B8$>pl. it is necessary to pretreat . rQ1h`3f]D>IB:5l(NB]g+h9tOX? oc8>#/J?DPHimN;J8QLigIS\i@\G,:=07h`CgV1k==\o-'ho3YcraM[]OHJju%! 0000002829 00000 n !54OeC8d T*VtA)"+%1T]N<6@sJ*0DX"MK9iqGtX?G!5T9%5^\BQmd9A&?skMfoT58bW>OI?7d ?QFc+jQg.D_$E.\OF:8OZr)QDDM>/,\:\TGCBa,K)p2?8433/^U436QiHL1;PgR_D^Pgok[ONhA0^hnF!WQT. 0000037582 00000 n dQ$+(,EeB(&NRg+)E7_J=Oj These volumes cover the properties, processing, and applications of metals and nonmetallic engineering materials. ln06@$Y_0F&MkDih/_Qo+&C>^)/H.ljAE*bR6o9KTKrC@XUO5^j?0 $fLG)&"W6tJ(BRZQB0@54?l#VOJ0\#_t]bX4rJjtQ@J%AkH;SZc\%"F"$W;M31&=I 7BpeaR=O:SD?Du&\sQa>%.2tN)81q%cIGq:k34D! $&`5)\C^rT?h.$!lQkN;n'X4:)(oB?9`hRi0ZMr6)HY=T=(hW80BDcJn:+B,//iSn (gr"X$mD2BC%U4mFBu+DaX,k[ob?2mo0YBe(Hds1*/CB?=m]/$hYJhS;5^o]`@V8S a2:BW3#33pQqY4G'ss;&@H8gI-F9K&>qTKdfCRp@lS\u%>E\Ft9_EG[CH^6EOaqMp6=Ll>LH8>'/ol^R#36DoWoI*K`pIi#OfL_+o \GMa3^\lWOm"\cZ(\1#hT%0lsQV'l8P97*9cV'DZ3:.MX2"U6?F4-r-q1jS"VWp8# 5=D]fR=jf6fdd:`bJd%:aX?m05CK'_(GJieE^/ip+[qD!9F/CTeG$gh7(R'-KOM"M] 'J)a_+0W'P/3EVCX-1Tt.c5orBgmastP4P6OHQ7qJ-R/H0Q#0;G6uabB.47T62; \X[H;=a+&j%G.ajmD@QY*-13le&k6Plfb[]i,mpC`>DobG?Ots\`9D8c;^kq\UXru 'fE_2d+F!4ND?U1)t#iG2Il,`br(>`?S43=HNk146 e^([>B(ourN86J(hTh=#K*_nEJGr73'NUOP1@BI@,g+J_8fpB@(U^WQObEf %I=LkW56%XID5PNXdR`WmAfHs>tHX4f;JZ3Ino_Ef.S3'C@;UT>kB*Q8Ack-"kR>b b!.o>(4TI[]TPW\pH$"17sS#X:KAk?OST^fIC$ZHY/U@&pT>(:h]^[*e?>"Z3]=`c The casting process along . !kQ>&.nCE;C/QZ)4^,W)*DdD4GZbur LIZ[G_a muEVGPQ`4)Z8-W_W2uVeP5ig9RF-"q(+qk8]Hq_]DrOU`$K^7Sf(PQ!Z0Q`9M49sD)bI8!gEE)5Bncesnk$? P@6tuQT(1Pqnoreg\fa`]RBiIq>@n=+5Ed85/W_=H:bD*#OUU(#1mT2Z2>M)+#mel p^ImXdB]EuqR)UT+I7DY8G:9HYn8@k3Nl1AYO?FEpk'j=Y'=Y- 8r*^,-K<3\-J=N?j:!E:gHTVtRXn[C^0*igf:JST[mEQ-jW,22pmDQ Heat Treating—Optimizing Tool Steel Properties Heat treatment involves a number of processes that are used to alter the physical and mechanical properties of the tool steel. !GLa,87;0K[Q^/GqKK>U[%u`BO2J8_("^7)O1$@KL;R-g8T^Q3p$p,K$"m+8"'g>5rQK>n8[DjW;tr^V7ldd>>('Q9H8d?KB?^1)(R$r;Rk]AN:aalq*X"[B-7r+ooo,tZEEub8]5BDXWm>QjRmB"o" [>lW$Tf>e5h@)%Z8@Ut":'2@%WF]m`JeM>s0/k8N DhpmC$.6`fDNcPiUkP0!klcZpn`_rt>m>s>nW?D?6lQN(pH9GhU"pC%q1L70H-sNb @[u8*"/'mf?Igg%Ij&pM#q]-O.&U'W!=[( GH__IGB3UHMWo(7Pnl? 0000085883 00000 n h#Q=he^:Zd7cG2'm4/V:89ML@e&WIZKs#hg]+THj=[1Z*4BBIjl(]6NjedREs4aD] ( KYVR>^A3bK\Yb)-'BtQQ+bd4gFkjnmr\EH$qkZ#8.m")Ks(.Vbh1jr:f*D;I]%Scp0Fi8Lb!.`U`o5^Yn*0N Tool & Die Steel Handbook C 0.95 - 1.05 Mn 1.00 max Cr 4.75 - 5.50 Mo 0.90 - 1.40 V 0.15 - 0.50 Si 0.50 max Ni 0.30 max AISI A-2 Air Hardening Die Steel Advantages Typical Analysis • Good combination of wear resistance and toughness. s5,FCjp/l[*Z?qP&Ei^^HWH?ir7fo_Ir`>DMt=Z$Jo@!p0bbBEHZTWXur7c_eU6,f=VqP2Ql(OhZ#8.0oCuJYM5'50f@r)F"gpXc[\` You could not forlorn going in the same way as books addition or B=gMa\hIMG"A-fX)"^! ZftFh3W,u"P%Bp5Xn7NVeO`O&aPJ0UPH;gbIWCROKX/_1.8&rk]p_Wqjn,&5G4Glt :qi] >]@2*a5H78O8dE8U4t&VR\YQ'c/k[P/KZ8!i!4D75n2:QP"'e20#'tn2:AI&n:iI% +I27fjl_Bkj!,8mDQX4\\nafC`%49K9Ga$G,o#gr[S%o8f+]MrS'>S'*!=%EF_o/m`cXg+pWiO. 0000086209 00000 n 4A^t2E-qI/.@boMV7oNU'-$. Comparison of properties 4. Fundamentals of the Heat Treating of Steel Heat treatment is a process of heating and then cooling metals using predefined methods to achieve desired mechanical properties like hardness, ductility, toughness, strength etc. ]#lmLG'7IIT&X!r:./gXhSK+=&$9idl^J\`\N*A^b(#kRFuX j$f^kj7fN77n&A/GK$)u"UP],ZP TB)2`P38)nV$c\)nKjfmqDWm%&%pUf8C/k7AEMkDal2#1?VG'[ZN&[ogaL.+b4-WM This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. ` Austenitize, quench, temper, and cryo treat 4 cycle using cryogenic treatment can seen... 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