SUZHOU FRANK STEEL CO.,LTD.
We specialize in seamless steel tube business
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ASME SA335 P9 Ferritic Alloy Steel Pipe For High Temperature Service
1. Product Description
In strict accordance with ASME SA335 P9 standard is used for production and testing. The chemical composition and physical properties fully meet the requirements of the standard. This product is seamless alloy steel pipe for high temperature. All grades of steel in this standard are delivered in the state of complete annealing, isothermal annealing and normalizing plus tempering. The tempering temperature is different. The minimum tempering temperature of P1, P2, P11 and p12 is 650 ℃, and that of P5, P9, p21 and P22 is the lowest, which tempering temperature is 675 ℃.The product can be cold drawn or hot rolled, mainly used for boilers and steam pipes with mechanical properties and high temperature requirements. Outer diameter is 1 / 8in-48in (3.2mm-1219.2mm), normally cold-drawn 8mm-168.3mm, hot-rolled >168.3mm.
For antirust purpose, customer can request black painted, blue painted, and oil soaking.
For both sides protection, customer can request plastic caps.
For up-market needed, customer can request addition internal and external burr cleaning and beveling.
2. Industrial application
ASME SA335 P9 Seamless carbon steel pipes are widely used in high-temperature industries. This product is mainly used for header and steam pipe of low and medium pressure boiler (the working pressure is generally not more than 5.88MPA, and the working temperature is below 450 ℃).
3. Chemical composition
| Standards | Steel pipes No. | Chemical composition(%) | |||||||||||||
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | Al | W | Nb | N | ||
| ASME SA335 | SA335 P1 | 0.10～0.20 | 0.10～0.50 | 0.30～0.80 | ≤0.025 | ≤0.025 | --- | 0.44～0.65 | |||||||
| SA335 P2 | 0.10～0.20 | 0.10～0.30 | 0.30～0.61 | ≤0.025 | ≤0.025 | 0.50～0.81 | 0.44～0.65 | ||||||||
| SA335 P5 | ≤0.15 | ≤0.50 | 0.30～0.60 | ≤0.030 | ≤0.030 | 4.00～6.00 | 0.45～0.65 | ||||||||
| SA335 P9 | ≤0.15 | 0.50～1.0 | 0.30～0.60 | ≤0.030 | ≤0.030 | 8.00～10 | 0.90～1.10 | ||||||||
| SA335 P11 | 0.05～0.15 | 0.50～1.0 | 0.30～0.60 | ≤0.030 | ≤0.030 | 1.00～1.50 | 0.50～1.00 | ||||||||
| SA335 P12 | 0.05～0.15 | ≤0.50 | 0.30～0.61 | ≤0.030 | ≤0.030 | 0.80～1.25 | 0.44～0.65 | ||||||||
| SA335 P22 | 0.05～0.15 | ≤0.50 | 0.30～0.60 | ≤0.030 | ≤0.030 | 1.90～2.60 | 0.87～1.13 | ||||||||
| SA335 P91 | 0.08～0.12 | 0.20～0.50 | 0.30～0.60 | ≤0.020 | ≤0.010 | 8.00～9.50 | 0.85～1.05 | ≤0.40 | 0.18～0.25 | ≤0.015 | 0.06～0.10 | 0.03～0.07 | |||
| SA335 P92 | 0.07～0.13 | ≤0.50 | 0.30～0.60 | ≤0.020 | ≤0.010 | 8.50～9.50 | 0.30～0.60 | - | ≤0.40 | 0.15～0.25 | ≤0.015 | 1.50～2.00 | 0.04～0.09 | 0.03～0.07 | |
4. Physical properties
| Standards | Steel pipes No. | Tensile strength(MPa) | Bend strength(MPa) | Elongation(％) | Impact energy(J) | Hardness |
| SA335 | P1 | ≥380 | ≥205 | ≥22 | ≥35 | ≤187HB |
| SA335 | P2 | ≥380 | ≥205 | ≥22 | ≥35 | ≤187HB |
| SA335 | P5 | ≥415 | ≥205 | ≥22 | ≥35 | ≤187HB |
| SA335 | P9 | ≥415 | ≥205 | ≥22 | ≥35 | ≤187HB |
| SA335 | P11 | ≥415 | ≥205 | ≥22 | ≥35 | ≤163HB |
| SA335 | P12 | ≥415 | ≥220 | ≥22 | ≥35 | ≤163HB |
| SA335 | P22 | ≥415 | ≥205 | ≥22 | ≥35 | ≤163HB |
| SA335 | P91 | 585～760 | ≥415 | ≥20 | ≥35 | ≤250HB |
| SA335 | P92 | ≥620 | ≥440 | ≥20 | ≥35 | 250HB |
5. Details Picture
about us
We are manufactory of seamless steel tubes. All tubes are made to order. Please show us what kind of steel grade ( standard ) you want, as long as tube’s OD, wall-thickness, length and quantity, we will give you a quotation immediately.