| 证书 | LR，BV，DNV，GL，ABS，KR，CCS，TS，PED，AD2000，ASME II ， III， | 材料等级： | GRADE 2 |
|---|---|---|---|
| 标准： | ASTM B861 | 表面： | Bright Annealed And Pickled And Polished |
| 尺寸 | 1/4’to 12′ | W.T.： | 1”to 16” |
ASTM B861 Grade 2 Titanium Alloy Heat Exchangers Food Chemical
Due to the inefficiency of stainless steel and other materials in many cases， titanium tubes and pipes are increasingly being used in a myriad of applications. A common titanium mill product is titanium tubing， which is used in a variety of products due to its superior corrosion resistance and strength-to-weight ratio. The development of many different alloys has expanded the use of titanium in industries ranging from industrial and chemical processing to power generation.
The American Society of Mechanical Engineers has approved most grades of titanium， which means more options for a variety of projects. While grades 1， 2， 3， 7， 9 and 11 are available， Grade 2 is suitable for most situations. the ready availability of Grade 2 makes it the material of choice for rapid production and larger orders.
Before choosing any grade， it is vital to determine exactly how a grade will be used. grades 7， 12， 16 or 26 can be used to make titanium pipes for use in areas where greater corrosion resistance is required. grades 3 and 12 may be the material of choice for pipes requiring greater strength.
化学成分 ASTM B861 Grade 2
| 钛 Gr 2 | C | Ti | N | 铁 | H | O | V | Al |
| 最大 0.1 | 99.2 分钟 | 0.03 最大值 | 0.3 最大值 | 0.015 最大值 | 最大 0.25 | - | - |
机械性能 ASTM B861 Grade 2
| TITANIUM ALLOY | UNS | PROOF STRENGTH RP0.2 MPA MIN | 拉伸压力 RM MPA MIN | 延长 A % MIN |
|---|---|---|---|---|
| Cp Ti Grade 1 | R50250 | 138-310 | 240 | 24 |
| Cp Ti Grade 2 | R50400 | 275-450 | 345 | 20 |
拉伸强度 的 ASTM B861 Grade 2
| 等级 | 拉伸强度，最小值 | Yield Strength (0.2% Offset) | Elongation 2 in. or 50 mm | |||||
| 分钟 | 最大 | |||||||
| Ksi | (Mpa) | Ksi | (Mpa) | Ksi | (Mpa) | gage length min % | ||
| 1 级 | 35 | (240) | 25 | (170) | 45 | (310) | 24 | |
| 二级 | 50 | (345) | 40 | (275) | 65 | (450) | 20 | |
等效成绩 of Astm ASTM B861 Grade 2
| SUPPLIER OF TITANIUM GRADES | UNS | ASTM/ASME | WERKSTOFF NR. | AFNOR |
|---|---|---|---|---|
| Ti Grade 1 (CP Ti) | R50250 | 1 级 | W.Nr. 3.7025 | T-35 |
| Ti Grade 2 (CP Ti) | R50400 | 二级 | W.Nr. 3.7035 | T-40 |
公差 of ASTM B861 Grade 2
| SIZE OD， MM (IN.) | TOLERANCES OD， MM (IN.) | WT MIN WALL % |
|---|---|---|
| < 25.4 (< 3/8) | ±0.102 (0.004) | +20/-0 |
| 25.4-38.1 (1-1 1/2) | ±0.127 (0.005) | +20/-0 |
申请：
- 氯化系统
- 热交换器
- Food Chemical
- 烟气脱硫系统
- 纸浆和纸张生产
