Overview
Application
It is mainly used to make high-quality alloy steel pipe for high pressure boiler pipe, heat exchanger pipe and super heat pipe
Main Grade
Grade of high-quality Alloy steel: T2,T12,T11,T22, T91, T92 etc.
Chemical Component
| Steel Grade |
Chemical Composition% |
|
C |
Si |
Mn |
P, S Max |
Cr |
Mo |
Ni Max |
V |
Al Max |
W |
B |
| T2 |
0.10~0.20 |
0.10~0.30 |
0.30~0.61 |
0.025 |
0.50~0.81 |
0.44~0.65 |
– |
– |
– |
– |
– |
| T11 |
0.05~0.15 |
0.50~1.00 |
0.30~0.60 |
0.025 |
1.00~1.50 |
0.44~0.65 |
– |
– |
– |
– |
– |
| T12 |
0.05~0.15 |
Max 0.5 |
0.30~0.61 |
0.025 |
0.80~1.25 |
0.44~0.65 |
– |
– |
– |
– |
– |
| T22 |
0.05~0.15 |
Max 0.5 |
0.30~0.60 |
0.025 |
1.90~2.60 |
0.87~1.13 |
– |
– |
– |
– |
– |
| T91 |
0.07~0.14 |
0.20~0.50 |
0.30~0.60 |
0.02 |
8.0~9.5 |
0.85~1.05 |
0.4 |
0.18~0.25 |
0.015 |
– |
– |
| T92 |
0.07~0.13 |
Max 0.5 |
0.30~0.60 |
0.02 |
8.5~9.5 |
0.30~0.60 |
0.4 |
0.15~0.25 |
0.015 |
1.50~2.00 |
0.001~0.006 |
For T91 other than above also includes Nickel 0.4, Va 0.18-0.25, Ni 0.06-0.10, Ni 0.03-0.07, Al 0.02, Ti 0.01, Zr 0.01. A Maximum, unless range or minimum is indicated. Where ellipses (...) appear in this table, there is no requirement, and analysis for the element need not be determined or reported. B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
Mechanical Property
| Steel Grade |
Mechanical Properties |
| T. S |
Y. P |
Elongation |
Hardness |
| T2 |
≥ 415MPa |
≥ 205MPa |
≥ 30% |
163HBW(85HRB) |
| T11 |
≥ 415MPa |
≥ 205MPa |
≥ 30% |
163HBW(85HRB) |
| T12 |
≥ 415MPa |
≥ 220MPa |
≥ 30% |
163HBW(85HRB) |
| T22 |
≥ 415MPa |
≥ 205MPa |
≥ 30% |
163HBW(85HRB) |
| T91 |
≥ 585MPa |
≥ 415MPa |
≥ 20% |
250HBW(25HRB) |
| T92 |
≥ 620MPa |
≥ 440MPa |
≥ 20% |
250HBW(25HRB) |
Test Requirement
In addition to ensuring chemical composition and mechanical properties, hydrostatic tests are performed one by one, and flaring and flattening tests are performed. . In addition, there are certain requirements for the microstructure, grain size, and decarburization layer of the finished steel pipe.
Supply Ability
Supply Ability: 2000 Tons Per Month Per Grade of ASTM SA213 Alloy Steel Pipe
Packaging
In Bundles And In Strong Wooden Box
Delivery
7-14 days if in stock, 30-45 days to produce
Payment
30% depsoit, 70% L/C or B/L copy or 100% L/C at sight
Product Detail
Boiler Tube