常用材料成份及热处理温度-回火温度硬度

常用材料化学成份,,,,,,,,,,,,,

,C,Si,Mn,Cr,Mo,Ni,P,S,Cu,其它,国产编号,,

SNCM220,0.17-0.23,0.15-0.35,0.60-0.90,0.40-0.65,0.15-0.30,0.40-0.70,≤0.030,≤0.030,/,/,20CrNiMo,,

SUM23,≤0.09,/,0.75-1.05,/,/,/,0.04-0.09,0.26-0.35,/,/,Y10,,

SUM24L,≤0.15,/,0.85-1.15,/,/,/,0.04-0.09,0.26-0.35,/,/,Y15,,

SUM43,0.40-0.48,/,1.35-1.65,/,/,/,0.04,0.24-0.33,/,/,Y40Mn,,

SCM440,0.38-0.43,0.15-0.35,0.60-0.85,0.90-1.20,0.15-0.30,≤0.25,≤0.030,≤0.030,≤0.30,/,42CrMo,,

S45C,0.42-0.48,0.15-0.35,0.60-0.90,≤0.20,/,≤0.20,≤0.030,≤0.035,/,/,45#,,

SCM415H,0.12-0.18,0.15-0.35,0.55-0.90,0.85-1.25,0.15-0.35,≤0.25,≤0.030,≤0.030,/,/,15CrMo,,

SUM31,0.14-0.20,/,1.00-1.30,/,/,/,0.04,0.08-0.13,/,/,15Mn,,

SNC815,0.12-0.18,0.15-0.35,0.35-0.65,0.70-1.00,/,3.00-3.50,≤0.030,≤0.030,/,/,12CrNi3,,

SUJ2,0.95-1.10,0.15-0.35,≤0.50,1.30-1.60,≤0.08,≤0.25,≤0.025,≤0.025,/,/,Cr2,,

SCM420,0.17-0.23,0.15-0.35,0.55-0.90,0.85-1.25,0.15-0.35,≤0.25,≤0.030,≤0.030,≤0.30,/,20CrMo,,

SUS630,0.07,1,1,15.0-17.5,/,3.00-5.00,≤0.040,≤0.030,3.00-5.00,Nb:1.5-4.5,0Cr17Ni4Cu4Nb,,

SUS440C,0.95-1.20,0.95,0.95,16.0-18.0,0.75,≤0.60,≤0.040,≤0.030,/,/,9Cr18Mo,,

SMnC420,0.14-0.19,≤0.4,1.0-1.30,0.80-1.10,/,/,≤0.035,0.02-0.04,/,/,20CrMn,,

SUS420F2,0.26-0.4,≤1.0,≤1.0,12.0-14.0,,≤0.60,≤0.040,≤0.030,,Nb:0.05-0.3,3Cr13,,

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热处理常用钢材对照表,,,,,,,,,,,,,

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中国GB美国AISI德国DIN瑞典ASSAB日本JIS,,,,,临界点℃,热处理温度℃,不同温度回火的硬度值HRC,,,,,,

,,,,,Ac1Ac3Accm,正火退火淬火,150,200,300,400,500,550,600

碳钢类：,,,,,,,,,,,,,

A3Q235,A283GRC,RSt37-2,,G3113,,900-920,38-40,,,,,,

8,1008,,,S9CK,,900-940,＜30,,,,,,

10,1010,C10CK10,,S10C,724876,915-945900-940,＜30,,,,,,

15,1015,C15CK15,,S15C,735863,900-920,38-42,,,,,,

20,1020,C22CK22,,S20C,735854,900-920,38-44,,,,,,

30,1030,C30CK30,,S30C,732813,850-900850-880850-900,55,48,40,35,25,22,20

35,1035,C35CK35,,S35C,724802802,840-890850-880850-900,55,48,43,35,26,22,20

40,1040,C40CK40,,S40C,724790,840-890840-870830-850,55,53,48,42,34,29,23

45,1045,C45CK45,,S45C,724780780,830-880820-840820-840,58,55,50,41,33,26,22

50,1049,C50CK50,,S50C,725760,820-870820-840810-830,58,55,50,41,33,26,22

55,1055,C55CK55,,S55C,727774,810-860770-810800-820,58,55,50,41,33,26,22

60,1060,C60CK60,,S58C,727766,800-850800-820820-840,63,56,50,45,34,30,24

65,10641065,C67CK67,,SUP2,727752,820-860790-810790-830,63,58,50,45,37,32,28

70,10691070,C70CK70,,,,800-840790-810820,63,58,50,45,37,32,28

20Mn,10191022,20Mn5,,,735854,770-810880-900870-890,45,,,,,,

40Mn,1039,40Mn4,,,726790790,840-870860-880,60,55,45,40,35,30,

T7,,1620,,SK7,725765765,800-820730-750780-830,61,60,58,47,40,35,28

T8,W1-0.8C,1625,,SK6,730750750,760-780740-760730-750,61,60,58,47,40,35,28

T9,W1-81/2,,,SK5,740760760,790-830750-780760-800,61,60,58,47,40,35,28

T10,W1-91/2,1645,,SK4,730800800,800-850760-780760-780,60,59,58,47,40,35,28

T11,W1-101/2,1654,1080,SK3,730810810,840-860760-790760-780,61,59,58,47,40,35,28

T12,W1-111/2,1663,,SK2,730820820,840-860760-780760-780,61,59,58,47,40,35,28

T13,W1-121/2,1673,,SK1,730830830,840-860680-710760-810,61,59,58,47,40,35,28

弹簧钢类：,,,,,,,,,,,,,

65Mn,1566,65Mn4,,,726765,820-860820-840760-790,61,58,54,47,39,34,29

60Si2Mn,9260,60CrMn6,,SUP6,755810,870-890850,61,60,56,51,43,38,33

50CrVA,6150,50CrV4,,50CrV4,752788,850-880810-870860-880,56,55,50,45,40,35,30

合金钢类：,,,,,,,,,,,,,

20Cr,5120,20Cr4,,SCr22,766838,870-900860-890860-880,62,61,52,43,,,

30Cr,5130,28Cr4,,SCr2,740815,860860-890850-870,56,55,45,35,25,,

40Cr,5140,38Cr4,,SCr4,743782,850-880825-845830-860,55,53,51,43,34,32,28

45Cr,5145,42Cr4,,SCr5,721771,830-850810-830830-850,55,54,50,45,35,30,25

50Cr,5150,,,,721771,830-850800-820820-840,55,54,50,45,35,30,25

5CrMnMo,VIG,2311,718H,SKT5,,800-850850-870,,,,,,,

15CrMo,,15CrMo5,,SCM415,,860-890850-880870-900,56,55,50,45,35,30,25

20CrMo,4118,20CrMo5,,SCM420,743818,880-920860-880870-890,55,54,50,45,35,30,25

30CrMo,4130,25CrMo4,,SCM2,757807,870-900830-850860-890,55,53,51,43,35,30,25

35CrMo,4135,35CrMo4,,SCM3,755800,830-860820-840820-850,55,53,51,43,34,32,28

42CrMo,"4140,4142",41CrMo4,709,SCM4,730780,850-900850840-880,56,55,51,45,35,30,25

38CrMoA1,6370,34CrA1M05,,SACM645,800940940,930-970840-870930-950,56,55,51,45,39,35,31

20CrMn,,7147,,SMnC420,765838,880-920690-730870-890,,,,35,30,28,25

40CrMn,,,,SMC3,,860-880680-720850-880,,,,35,30,28,25

40CrNiMoA,4340,36NiCrMo4,,SNCM8,732774,750-800850-880,60,58,55,50,40,35,30

25Cr2MoVA,,24CrMoV5.5,,,760840,860-880,60,58,55,,,,

20CrMnTi,,,,,740825,920-950680-720850-870,61,60,55,50,40,35,30

40CrNi,3140,46NiCr6,,SNC1,731769769,840-860810-830850-880,,,,,,,

9CrSi,,2108,2092,,770870870,870-880790-810860-880,61,59,57,50,47,42,38

Cr12,D3,2080,635,SKD1,810835835,850-870960-980,61,60,58,55,52,,

Cr12MoV,D2,2379,XW-41/42,SKD11,830855855,900-950850-8701020-1050,61,60,58,55,52,,

Cr5Mo1V,A2,2363,XW-10,SKD12,,940-960,,,,,,,

W,F1,2414,,SKS21,740820820,,60,58,50,45,40,35,30

CrWMn,O7,2419,DF-3,SKS31,750940940,870-880770-790820-850,63,61,59,53,47,42,37

9CrWMn,O1,2510,DF-2,SKS3,750900900,850-870760-780810-850,62,61,58,52,45,40,35

热作钢类：,,,,,,,,,,,,,

3Cr2W8V,H21,2581,,SKD5,800850850,900-950850-8601050-1150,,55,,,,49,45

4Cr5MoSiV,H11,2343,VD-11,SKD6,,860-8801020-1050,,,,,,,

4Cr5MoSiV1,H13,2344,8407,SKD61,975935935,860-8901020-1040,53,51,49,,,,

3Cr2Mo,P20,,718H,,,830-860,53,51,49,,,,

高素钢类：,,,,,,,,,,,,,

W18Cr4V,T1,3355,2750,SKH2,820860860,900-950850-8801160-1180,560℃回火3次,,,,,,

W6Mo5Cr4V2,M2,3343,KM-2,SKH55,835885885,900-950850-8701200-1240,560℃回火3次,,,,,,

轴承钢类：,,,,,,,,,,,,,

GCr15,E52100,3505,,SUJ2,745900900,900-950770-780830-860,64,61,55,49,41,36,31

9Cr18,440C,M017,,SUS4400C,,850-870850-8701050-1100,61,58,,,,48,43

不锈钢类：,,,,,,,,,,,,,

1Cr13,403,4006,,SUS403,730850,850-9001000-1050,45,45,40,35,30,25,20

2Cr13,420,4021,S-136,SUS420J1,820950,870-9001000-1050,50,45,40,38,35,33,28

3Cr13,420,,S136H,SUS420J2,820950,870-900960-1100,54,52,49,,48,43,35

4Cr13,,4034,,,,870-900960-1100,55,53,52,50,45,40,35

7Cr17,440A,,,SUS440A,,750-800950-1050,,,,,,,

0Cr19Ni9,304,X5CrNi189,,SUS304,,950-1050,,,,,,,

1Cr17Ni7,301,,,SUS301,,950-1050,,,,,,,

1Cr17Ni2,431,X22CrN17,,SUS431,810820,620-705950-1050,61,60,48,40,,,

1Cr18Ni9,302,4300,,SUS302,,950-1050,,,,,,,

编制说明：,,,,,,,,,,,,,

1）本厂淬火、回火工艺参数常规产品按“热处理工艺卡”中规定淬火、回火参数执行，散杂件及新产品可参照同类技术要求及复,,,,,,,,,,,,,

杂程度的零件淬火、回火参数执行。,,,,,,,,,,,,,

2）淬火后应及时回火，不能及时回火的零件，应在低温炉中去应力，去应力时间不能超过8h。,,,,,,,,,,,,,

3）回火时间的制定原则是保证透烧并使组织转变充分得以进行，以及尽可能消除淬火应力，一般为1-3h为宜。,,,,,,,,,,,,,

4）合金含量高的调质钢的加热速度应小于淬火、正火加热速度。,,,,,,,,,,,,,

5）除工件规定带温回火零件外，一般淬火件在回火前要清洗。,,,,,,,,,,,,,

6）回火后，油、水冷却的目的在于防止回火脆性。,,,,,,,,,,,,,

注：临界点：就是金属或合金在加热或冷却过程中，发生相变的温度称为临界点，也就是相变点。,,,,,,,,,,,,,

对于钢和铸铁，用Ac1、Ac3和Accm等表示在平衡条件下的固态相变点，其中：Ac1表示加热时珠光体向奥氏体，或冷却时奥氏体向珠,