| 标准： | ASTM A928 | 材料 | S31803 |
|---|---|---|---|
| 测试： | ET，HT，扁平化测试；膨胀测试；硝酸亚汞测试；氨蒸气测试；化学分析；显微镜检查；拉力测试。 | 规格 | Astm A928 Uns S31803 Super Duplex Stainless Steel Pipe |
| 类型 | 无缝/焊接 | 申请： | Decoration，industry Etc. |
| 形状 | 圆形.方形.矩形 | 表面： | ba/2b/no.1/no.3/no.4/8k/hl/2d/1d |
| 认证： | BV， ISO， CE， SGS Etc | 处理： | Polished， Cold Drawn， Annealed With Nitrogen Protection |
| 宽容： | ±1% | ||
| 强光 | Astm A928 Duplex Stainless Steel Pipes， Uns S31803 Duplex Stainless Steel Pipes， Astm A928 uns s31803 pipe | ||
Astm A928 uns S31803 super duplex stainless steel pipe
我们是中国最大的不锈钢、双相钢和合金钢管生产商之一。经过 20 多年的发展，我们在世界各地积累了众多客户，"同创 "产品也赢得了客户的一致好评。
双相不锈钢是一种耐腐蚀性极强的可加工硬化合金。它们的微观结构由奥氏体相和铁素体相混合组成。因此，双相不锈钢同时具有奥氏体不锈钢和铁素体不锈钢的特性。与纯奥氏体不锈钢和纯铁素体不锈钢相比，这种特性组合可能意味着一些折衷。
Duplex stainless steels are in most cases， tougher than ferritic stainless steels. Strengths of duplex stainless steels can in some cases be double that for austenitic stainless steels. The duplex stainless steels are considered resistant to stress corrosion cracking， they are not as resistant to this form of attack as ferritic stainless steels. However， the corrosion resistance of the least resistant duplex stainless steels is greater than that for the most commonly used grades of stainless steels， i.e. 304 and 316.
Duplex stainless steels are also magnetic， a property that can be used to easily differentiate them from common austenitic grades of stainless.
Property data given in this document is typical for flat rolled products covered by ASTM A240/A240M. ASTM， EN or other standards may cover products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.
Equal Grade
| 标准 | WERKSTOFF NR. | UNS |
| Duplex UNS S31803 | 1.4462 | S31803 |
| Duplex UNS S32205 | 1.4462 | S32205 |
UNS S31803 Duplex Pipe Chemical Composition
| 等级 | Duplex S31803 | Duplex S32205 |
| C | 最大 0.030 | 最大 0.030 |
| 锰 | 2.00 max. | 2.00 max. |
| Si | 1.00 max. | 1.00 max. |
| P | 最大 0.030 | 最大 0.030 |
| S | 0.020 max. | 0.020 max. |
| Cr | 22.0 - 23.0 | 21.0 - 23.0 |
| 倪 | 4.50 - 6.50 | 4.50 - 6.50 |
| 莫 | 3.0 - 3.5 | 2.50 – 3.50 |
| N | 0.14 - 0.20 | 0.08 – 0.20 |
| 铁 | 63.72 min. | 63.54 分钟 |
UNS S31803 Duplex Pipe Mechanical Properties
| 要素 | Duplex S31803 | Duplex S32205 |
| 密度 | 7.805 | 7.805 |
| 熔点 | 0.285 | 0.285 |
| 拉伸强度 | 1420 - 1465 | 1420 - 1465 |
| 屈服强度（0.2%Offset） | 2588 - 2669 | 2588 - 2669 |
| 伸长率 | 25 min. | 25 min. |
UNS S31803 Duplex Pipe Physical Properties
| 密度 | 热膨胀 | 弹性模量 | 导热性 | 电阻率 |
| g/cm3 | K | Gpa | W/m.k | Ω.m |
| 7.805 | 13.7*10-6 | 200 | 19 | 0.085*10-6 |
应用
- 化学加工
- Transport and storage
- Oil and Gas exploration and processing equipment
- Marine and other high chloride environments
- Pulp and paper digesters
- Liquor tanks and paper machines
