| 类型 | 无缝，焊接 | 标准： | ASME A213，A312，A269 |
|---|---|---|---|
| 材料 | TP321/321H | Solusion： | 腌制退火 |
| 名称： | 酸洗和退火平端 Astm A312 管材 | 申请： | 装饰，建筑，锅炉，油气，电 |
| 强光 | Pickled Annealed Stainless Steel Round Tube， SA312 TP321 Stainless， Plain End Stainless Steel | ||
ASTM A312 / SA312 TP321 Stainless Plain End Pickled And Annealed
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说明
Alloy 321 Tube is a versatile grade of austenitic stainless steel. Also referred to as by its trade name UNS S32100， stainless steel grade ASTM A312 Tp321 is a titanium stabilized alloy. . The 321 stainless steel tube is stabilized by titanium with a chemical composition of 17 to 19 percent chromium and 9 to 12 percent nickel. These pipes exhibit enhanced corrosion and oxidation resistance in stress-induced environments. 321 SS tubes are insensitive to intergranular corrosion when heated in the carbide precipitation range of 425 to 850 degrees Celsius. These pipes are a good choice for applications where temperatures are around 900 degrees Celsius. 1.4541 Pipelines incorporate high strength and water resistant corrosive media. The minimum tensile strength of the pipeline is 515mpa and the minimum yield strength is 205mpa. These pipes can easily stretch by 40 percent. 321 stainless steel tube has a density of 8.0kg /cm3 and a hardness of 217max Brinell. The tubes can be solution treated or annealed by heating at temperatures ranging from 950 °C to 1120°C followed by rapid cooling， thereby improving their strength and corrosion resistance.
Chemical Composition of ASTM A312 TP321 Stainless Steels
| 等级 | C | 锰 | Si | P | S | Cr | 莫 | 倪 | N | 其他 | |
| 321 | 分钟 最大 | – 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | – | 9.0 12.0 | 0.10 | Ti=5(C+N) 0.70 |
| 321H | 分钟 最大 | 0.04 0.10 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | – | 9.0 12.0 | – | Ti=4(C+N) 0.70 |
Mechanical Properties of ASTM A312 TP321 Stainless Steels
| 等级 | 最小拉伸强度（兆帕 | 屈服强度 0.2% 抗压强度（兆帕） min | 伸长率（%，50 毫米）最小值 | 硬度 | |
| 洛氏 B (HR B) 最大值 | 最大布氏硬度 (HB) | ||||
| 321 | 515 | 205 | 40 | 95 | 217 |
| 321H | 515 | 205 | 40 | 95 | 217 |
| 321H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
ASTM A312 TP321 Stainless Steels Physical Properties
| 等级 | 密度（千克/立方米） | 弹性模量（GPa） | 平均热膨胀系数 (μm/m/°C) | 导热系数（瓦/米.K） | 比热 0-100°C (J/kg.K) | 电阻率（nΩ.m） | |||
| 0-100°C | 0-315°C | 0-538°C | 100°C 时 | 在 500°C 时 | |||||
| 321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
grade Specification Comparison for ASTM A312 TP321 Stainless Steels
| 等级 | UNS 编号 | 老英国 | Euronorm | 瑞典 SS | 日本 JIS | ||
| BS | En | 没有 | 名称 | ||||
| 321 | S32100 | 321S31 | 58B， 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUS 321 |
| 321H | S32109 | 321S51 | – | 1.4878 | X10CrNiTi18-10 | – | SUS 321H |
申请
食品加工设备，尤其是在氯化物环境中。
实验室工作台和设备。
沿海建筑镶板、栏杆和装饰。
船用配件
化学品容器，包括用于运输的容器。
热交换器。
用于采矿、采石和水过滤的编织或焊接筛网。
螺纹紧固件
弹簧
