30CrMnSiNi2A

Description

30CrMnSiNi2A合金结构钢经热处理后可获得高的强度、好的塑性和韧性、良好的抗疲劳性能和断裂韧度、低的疲劳裂纹扩展速率。

30CrMnSiNi2A alloy structural steel can obtain high strength, good plasticity and toughness, good fatigue resistance and fracture toughness and low fatigue crack growth rate after heat treatment.

Chemical Composition of 30CrMnSiNi2A Steel Material
 CSiMnSPCrNi
%0.27-0.340.90-1.201.00-1.300.020 MAX0.020 MAX0.90-1.201.40-1.80

Mechanical Properties of 30CrMnSiNi2A:
Tensile strength σb (MPa): 1) 1767; 2) 1627
Elongation δ5 (%): 1) 12; 2) 13
Reduction of ψ (%): 50
Impact toughness αku (J / cm2): 1) 79; 2) 90
Sample size: bar

Physical properties of 30CrMnSiNi2A Steel Material:

Critical temperature of 30CrMnSiNi2A Steel

Critical piontAc1Ac3Ms
Temperature/℃705 705800 815321 314

Elastic modulus of 30CrMnSiNi2A Steel

Temperature/℃20100200250
Elastic modulus E/MPa211000208000204000202000

Linear Expansion Coefficient of 30CrMnSiNi2A Steel:

Temperature/℃2017~10017~20017~30017~40017~50017~60017~70017~80017~900
Linear Expansion Coefficient /C10.5511.3711.6712.6812.913.5513.813.911.1512.1

Thermal conductivity of 30CrMnSiNi2A Steel:

Temperature/℃20100200300400500600700800900
Thermal conductivity λ/W·(m·K)25.728.029.329.929.328.227.025.724.022.3

Mass constant pressure heat capacity of 30CrMnSiNi2A Steel:

Temperature/℃20100200300400500600
Mass constant pressure heat capacitycp/J·(kg·K)472.3526.6518.0639.5698.0752.4831.8

Heat treatment :

1) 890 ~ 900 ℃ oil quenching, 200 ~ 300 ℃ tempering, air-cooled;

2) 890 ~ 900 ℃ heated, quenched into 210 ~ 280 ℃ nitrate bath isothermal 1h, air-cooled, and then at 200 ~ 300 ℃ tempering, air-cooled.

Features:

淬透性较高,切削加工性和焊接性尚好,但对缺口和氢脆(包括环境氢脆)较敏感。30CrMnSiNi2A宜作高强度连接件和轴类零件等重要受力结构部件。

High hardenability, good machinability and weldability, but sensitive to notch and hydrogen embrittlement (including environmental hydrogen embrittlement).

30CrMnSiNi2A should be used as important stressed structural components such as high-strength connectors and shaft parts.

Available Size

Round BarDiameter(mm): 6-800mm ,Length: 1000-9000mm or custom size
Plate/Flat/BlockThickness: 6mm-500mm , Width: 20mm-1000mm or custom size
Tolerance±1%,Thickness: +/-0.02mm, Width:+/-2mm

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