ASTM 269 A249 Small Size Stainless Boiler Steel Tube Used for Building
Product Information
Boiler tube is a kind of seamless tube.
Manufacturing methods and seamless tube are the same, but have strict request for manufacturing steel used in the steel pipe.
According to the use of temperature can be divided into two general boiler tube and high pressure boiler tube.
Mechanical properties of the boiler tube steel is eventually use (mechanical properties) of the important performance indicators, it depends on the chemical composition of the steel and heat treatment system.
In the steel tube standard, according to the different using requirements, rules on the tensile properties (tensile strength, yield strength or yield point, elongation) and hardness, toughness index, and user's high, low temperature performance, etc.
Mechanical Properties of 10CrMo910
Thickness | Yield Strength | Tensile Strength | Elongation (A) |
mm | MPa | MPa | % |
≤16 | 310 | 480/630 | 18 |
>16 ≤40 | 300 | 480/630 | 18 |
>40 ≤60 | 290 | 480/630 | 18 |
>60 ≤100 | 280 | 470/620 | 17 |
>100 ≤150 | 265 | 460/610 | 17 |
>150 ≤250 | 250 | 450/600 | 17 |
Grade | C | Mn | Si | Cr | Mo | S | P |
20G | 0.17~0.23 | 0.35~0.65 | 0.17~0.37 | --- | --- | ≤0.020 | ≤0.025 |
20MnG | 0.17~0.23 | 0.70~1.00 | 0.17~0.37 | --- | --- | ≤0.020 | ≤0.025 |
25MnG | 0.22~0.29 | 0.70~1.00 | 0.17~0.37 | --- | --- | ≤0.020 | ≤0.025 |
12CrMoG | 0.08~0.15 | 0.40~0.70 | 0.17~0.37 | 0.40~0.70 | 0.40~0.55 | ≤0.020 | ≤0.025 |
15CrMoG | 0.12~0.18 | 0.40~0.70 | 0.17~0.37 | 0.80~1.10 | 0.40~0.55 | ≤0.020 | ≤0.025 |
SA-210A1 | ≤0.27 | ≤0.93 | ≥0.10 | --- | --- | ≤0.035 | ≤0.035 |
SA-210C | ≤0.35 | 0.29~1.06 | ≥0.10 | --- | --- | ≤0.035 | ≤0.035 |
SA-213T2 | 0.10~0.20 | 0.30~0.61 | 0.10~0.30 | 0.50~0.81 | 0.44~0.65 | ≤0.025 | ≤0.025 |
SA-213T12 | 0.05~0.15 | 0.30~0.61 | ≤0.50 | 0.80~1.25 | 0.44~0.65 | ≤0.025 | ≤0.025 |
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