2012年11月19日
主题涵盖
Introduction
化学成分
Physical Properties
Mechanical Properties
Thermal Properties
其他名称
Applications
Introduction
超优合金或高性能合金有各种形状,并包含不同组合的元素以获得特定结果。这些合金具有三种类型,即铁基,基于钴和镍基合金。基于镍和基于钴的超优合金可根据组合物和应用作为铸造或锻造的合金。
超级合金具有良好的氧化和蠕变resistance and can be strengthened by precipitation hardening, solid-solution hardening and work hardening methods. They can also function under high mechanical stress and high temperatures and also in areas that require high surface stability.
The following datasheet provides an overview of super alloy 48.
化学成分
The chemical composition of super alloy 48 is outlined in the following table.
Element |
内容 (%) |
铁,Fe. |
49. |
镍,镍 |
48. |
Cobalt,Co. |
1 |
锰,Mn. |
0.80 |
Silicon,Si |
0.30 |
铬,Cr. |
0.25 |
铝,AL. |
0.10 |
Carbon, C |
0.050 |
Phosphorous, P |
0.025 |
硫磺,S |
0.025 |
Physical Properties
The following table shows the physical properties of super alloy 48.
Properties |
Metric |
imperial |
密度 |
8.20 g /cm³ |
0.296磅/英尺 |
熔点 |
1450°C. |
2640°F. |
Mechanical Properties
超合金48的机械性能显示在下表中。
Properties |
Metric |
imperial |
拉伸强度(测试前退火) |
520 MPa. |
75400 psi. |
Yield strength (annealed prior to test, @strain 0.200%) |
26.0 MPa |
3.7700 psi |
断裂伸长(测试前退火) |
42% |
42% |
Thermal Properties
超合金48的热性质在下表中给出。
Properties |
Metric |
imperial |
Thermal expansion co-efficient (@20-100°C/68-212 °F) |
8.50μm/ m°C |
4.72μIN/ IN°F |
导热系数 |
16.。7 W/mK |
116 Btu In /Hr.ft².°F |
其他名称
Equivalent materials to super alloy 48 are as follows:
- ASTM A753合金2
- ASTM F30
- MIL N-14411B Comp 3
Applications
超级合金48适用于在高达450°C(840°F)的温度下运行的工业恒温器中的用途。该合金还用于白炽灯电灯泡和无线电阀中的玻璃 - 金属密封件。