| 标准： | astm a249， asme sa249 | 年级 | TP304 |
|---|---|---|---|
| 类型 | 焊接 | 壁厚 | 0.89mm， 1mm， 1.24mm， 1.5mm， 1.65mm， 2mm， 2.11mm， 2.463mm， 2.5mm， 2.77mm |
| 表面： | 光亮退火 (BA)，酸洗和退火，抛光 | O.D： | 1/4′(6.35)， 3/8′(9.52)， 1/2′ (12.7)， 5/8′(15.88)， 3/4′ (19.05)， 1′(25.4) ， 1-1/4′(31.75)， 1-1/2′(38.1)， 2′ (50.8)， 2-1/2′(63.5) ， 3′ (76.2) |
| 强光 | ASTM A249 Stainless Steel Welded Pipe， 1.4301 不锈钢焊管， Annealed Welded Stainless Steel Pipe | ||
ASTM A249 TP304 1.4301 Stainless Steel Welded Tube For Oil Service
What is ASTM A249?
This guide specifies standard specification for nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels with various grades intended for such use as a boiler， superheater， heat exchanger， or condenser tubes. Heat and product analysis shall conform to the requirements as to chemical composition for carbon， manganese， phosphorous， sulfur， silicon， chromium， nickel， molybdenum， nitrogen， copper， and others.
All materials shall be furnished in the heat-treated condition in accordance with the required solution temperature and quenching method. When the final heat treatment is in a continuous furnace， the number of tubes of the same size and from the same heat in a lot shall be determined from the prescribed size of the tubes.
TONG CHUANG Groupo is one of the large suppliers for high quality ASTM A249 / ASME SA249 Tube. Our ASTM A249 Tubing Specification for nominal-wall-thickness welded tube and heavily cold worked welded tube made from the austenitic steels with various grades intended for such use as a heat exchanger， boiler， superheater or condenser tube.
ASME SA249 material shall conform to the prescribed tensile and hardness properties such as yield strength， tensile strength， elongation and Rockwell hardness number. Also， each ASTM A249 Tubing， astm a249 tube undergo mechanical tests such as flattening test， tension test， flange test， reverse-bend test， hardness test， and hydrostatic or nondestructive electric test.
SA 249 TP304 管的化学成分
| 等级 | C | 锰 | Si | P | S | Cr | 莫 | 倪 | N | |
| 304 | 分钟 | - | - | - | - | - | 18.0 | - | 8.0 | - |
| 最大 | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||
ASTM A249 TP304 管材物理性能
| 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 | |||||
| 304 | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
TP304 的等效等级
| 等级 | UNS 编号 | 老英国 | Euronorm | 瑞典 SS | 日本 JIS | ||
| BS | En | 没有 | 名称 | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
| ASTM A249 Grade | 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) | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
应用
-普通工业服务（石油、化工、造纸、化肥、织物、航空和核能）
-Fluid， gas and oil industry
-热传输和压力服务
-建筑和装饰
-锅炉和热交换器系统
-装饰用途，锅炉，汽车零部件，医疗器械，食品工业，建筑材料）。
