Jun 20 2013
Topics Covered
介绍
化学成分
物理特性
机械性能
Thermal Properties
其他名称
Applications
介绍
合金钢是钢质的合金,具有不同元素的总量,重量在1-50%之间,以增强其机械性能,例如强度,硬度,韧性和耐磨性。另一方面,低合金钢用于实现更好的可耐用性,进而增强了其他机械性能。
AISI 4140H是H钢级合金钢,通常称为AISI 4140H铬 - 莫利贝氏钢。以下数据表将概述AISI 4140H合金钢。
化学成分
The chemical composition AISI 4140H alloy steels is outlined in the following table.
Element |
Content (%) |
铁,铁 |
96.585 - 97.93 |
Chromium, Cr |
0.75 - 1.2 |
明尼苏达州锰 |
0.65 - 1.1 |
Carbon, C |
0.37 - 0.44 |
钼,密苏里州 |
0.15 - 0.3 |
Silicon, Si |
0.15 - 0.3 |
Sulfur, S |
≤0.040 |
磷,p |
≤0.035 |
物理特性
The following table shows the physical properties of AISI 4140H alloy steels.
Properties |
Metric |
Imperial |
Density |
7.85 g/cm3 |
0.284 lb/in3 |
机械性能
The mechanical properties of AISI 4140H alloy steels are displayed in the following table.
Properties |
Metric |
Imperial |
Tensile strength |
1150 MPA |
167000 psi |
Yield strength |
1050 MPa |
152000 psi |
Modulus of elasticity |
205 GPA |
29700 ksi |
散装模量 |
140 GPA |
20300 ksi |
剪切模量 |
80 GPa |
11600 ksi |
Poisson’s ratio |
0.29 |
0.29 |
Elongation at break |
17.50% |
17.50% |
Reduction of area |
55% |
55% |
Hardness, Brinell |
341 |
341 |
Hardness, Vickers |
361 |
361 |
Hardness, Knoop |
369 |
369 |
Hardness, Rockwell C |
37 |
37 |
Hardness, Rockwell B |
99 |
99 |
Thermal Properties
The thermal properties of AISI 4140H alloy steels are given in the following table
Properties |
Metric |
Imperial |
热膨胀同时(@0-100°C/32-212°F) |
12.2 µm/m°C |
6.78 µin/in°F |
Thermal conductivity |
42.6 W/mK |
296btu.in/hrft².°F |
其他名称
等同于AISI 4140H合金钢的其他名称包括以下内容。
- B.S.708 A 42
- B.S.708 M 40
- B.S.709 M 40
- ASTM A304
- SAE J1268
- SS 2244
- JIS SCM 4
- JIS SCM 4 H
- DIN 1.7225
- AFNOR 42 CD 4
- UNI 40 CrMo 4
- UNI 38 CRMO 4 KB
Applications
The following are the list of applications of AISI 4140H alloy steels:
- Oil industry
- Automotive gears
- Crank shafts
- Gun barrels
- Steering knuckles