42crmo-45钢调质后性能
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钢组Steel: CrMo 序号No.: 40 牌号Grade: 42CrMo
试样毛坯尺寸Sample size/mm: 25
热处理|淬火|加热温度℃|第一次淬火:Thermal treatment/quenching/heating temperature o C/ first quenching: 850
热处理|淬火|加热温度℃|第二次淬火: Thermal treatment/quenching/heating temperature o C/ second quenching－
热处理|淬火|冷却剂: 油Thermal treatment/quenching/coolant: oil
热处理|回火|加热温度℃: Thermal treatment/tempering/heating temperature o C/ 560
热处理|回火|冷却剂: 水、油Thermal treatment/ tempering /coolant: water, oil
力学特性|抗拉强度Mechanical property/tensile strength σb/MPa，≥: 1080
力学特性|屈服点Mechanical property/yield point σs/MPa，≥: 930
力学特性|断后伸长率Mechanical property/elongation at breaking δ5(%)，≥: 12
力学特性|断面收缩率Mechanical property/reduction of cross section areaψ(%)，≥: 45
力学特性|冲击吸收功Mechanical property/impact energy Aku2/J，≥: 63
钢材退火或高温回火供应状态布氏硬度Steel Brinell hardness at delivery after annealing or high temperature tempering HBS100/3000，≤: 217
牌号Grade: 45
试样毛坯尺寸Sample size/mm: 25
推荐热处理/℃|正火: Recommended thermal treatment o C/ normalizing 850
推荐热处理/℃|淬火: Recommended thermal treatment o C/quenching 840
推荐热处理/℃|回火: Recommended thermal treatment o C/tempering 600
力学性能|Mechanical property σb/MPa≥: 600
力学性能|Mechanical property σs/MPa≥: 355
力学性能|Mechanical property δ5(%)≥: 16
力学性能|Mechanical property ψ(%)≥: 40
力学性能|Mechanical property AKU/J≥: 39
钢材交货状态硬度，≤|未热处理钢: 229 Steel hardness at delivery state HBS10/3000 ≤without thermal treatment
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钢材交货状态硬度HBS10/3000，≤|退火钢: 197 Steel hardness at delivery state HBS10/3000, ≤annealed steel 42CrMo性能
Steel Group Sequence
No.
Unified
Numeral
Code
Brand No.
Chemical Component, %
C Si Mn Cr Mo Ni W B Al Ti V
39 A30352 35CrMo
0.32-0.4
0.17-0.3
7
0.40-0.7
0.80-1.1
0.15-0.2
5
40 A30422 42CrMo
0.38-0.4
5
0.17-0.3
7
0.50-0.8
0.90-1.2
0.15-0.2
5
Steel Group Sequenc
e No.
Brand
No.
Sample Raw
Stock Size
mm
Heat Treatment Mechanical Property
BH
HB10/3000
No More
Than
Quench Tempering Tensile
Strength
MPa
Yield
Point
MPa
Stretching
Rate after
Breaking
%
Shrinkage
%
Impact
Absorptio
n Power J
Heat Temperature, ℃
Coolant
Heat
Temperature,
℃
Coolant
1st Quench
2nd
Quench
No Less Than
CrMo 40 42CrMo 25 850 ―Oil 560 Water,oil 1080 930 12 45 63 217
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