Sep 26 2012
涵盖了主题
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
热性能
Other Designations
制造和热处理
可加工性
Welding
Hot Working
Cold Working
Annealing
Tempering
硬化
申请
Introduction
不锈钢是高合金钢。它们包含约4-30％的铬。它们进一步分为三种类型，例如马氏体，奥氏体和铁质钢。另一组不锈钢是降水钢钢。它们是奥氏体和马氏体钢的组合。
Grade 350 stainless steel alloy is a heat treatable austenitic/martensitic alloy. The following datasheet gives an overview of grade 350 stainless steel alloy.
Chemical Composition
下表显示了350级不锈钢合金的化学成分。
| 元素 |
内容 （％） |
Iron, Fe
|
72.69 - 76.29
|
| 铬，Cr |
16-17 |
| Nickel, Ni |
4- 5 |
| Molybdenum, Mo |
2。5-3.25 |
| Manganese, Mn |
0.5-1.25 |
| 硅，SI |
0.5 |
| Nitrogen, N |
0.07-0.13 |
| 碳，c |
0.07-0.11 |
| Phosphorus, P |
0.04 |
| 硫，s |
0.03 |
Physical Properties
The physical properties of grade 350 stainless steel alloy are highlighted in the following table.
| 特性 |
公制 |
帝国 |
| 密度 |
7.7-8.03厘米3 |
0.278-0.290 lb/in3 |
Mechanical Properties
下表概述了350级不锈钢合金的机械性能。
| 特性 |
公制 |
帝国 |
| 抗拉强度 |
1105 MPa |
160266 psi |
| 产量强度 |
415 MPA |
60190 PSI |
| 弹性模量 |
190-210 GPA |
27557-30458 KSI |
| 泊松比 |
0.27-0.30 |
0.27-0.30 |
| 伸长 |
30% |
30% |
| 硬度 |
95 |
95 |
热性能
The thermal properties of grade 350 stainless steel alloy are displayed in the following table.
| 特性 |
公制 |
帝国 |
热膨胀同时（@ 20-100°C/70-212°F）
|
11.3 µm/m°C |
6.55 µin/in°F |
导热率（@ 38°C/100°F）
|
14。5W/mK |
100.7 BTU in/hr.ft².°F |
Other Designations
其他等同于350级不锈钢合金的名称包括：
- AMS 5546
- AMS 5548
- AMS 5554
- ASTM A579
- ASTM A693
- MIL S-8840
- AMS 5745
- AMS 5774
- AMS 5775
- SAE J467 (AM-350)
制造和热处理
可加工性
350级不锈钢合金可以使用在高强度不锈钢上应用的实践来加工。建议使用锋利的工具，阳性进料，慢速和足够的润滑剂。
Welding
Grade 350 stainless steel alloy can be welded using all common techniques except oxyacetylene welding method. After welding, this alloy is annealed to restore maximum properties.
Hot Working
在1177°C（2150°F）加热后，进行350级不锈钢合金的热量工作。此过程在982°C（1800°F）下完成
Cold Working
在退火状态下，350级不锈钢合金可以冷。由于其高工作加强速率和马氏体的形成，该合金的根本变形受到限制。
Annealing
Grade 350 stainless steel is annealed by soaking at 1010 to 1066°C (1850 to 1950°F) followed by quenching.
Tempering
Grade 350 stainless steel is soaked at -73°C (-100°F). It is then tempered at 454°C (850°F) to attain maximum strength or at 538°C (1000°F) to attain maximum toughness and corrosion resistance for 3 to 4 h.
硬化
Grade 350 stainless steel can be hardened by sub zero or double aging. Before performing this process, this alloy is prepared by rapidly cooling at 932°C (1710°F).
申请
350级不锈钢用于阀门和燃气轮机组件，以及需要良好强度和耐腐蚀性的工业切割机。