ASTM A335 Alloy-Steel Pipe for High-Temperature
Good oxidation resistance, corrosion resistance and tissue stability. The thermal strength property is high, and the craft performance is good.
Applications:
High temperature sulfur corrosion, high temperature hydrogen and hydrogen sulfide corrosion, organic acid corrosion.
It has been widely used in various heating surface pipelines such as thermal power, nuclear power, petrochemical and so on. The main steam pipeline, which is commonly used in thermal power plant, is an important supervisory pipeline in thermal power plant. The quality of welding is related to the safe and economical operation of power plant.
Chemical Requirements
Grade | UNS Designa- tionA | Carbon
| Man- ganese | Phos- Phorus max | Sulfur, max | Silicon | Chromium Molybde- | Others | ||
P1 | K11522 | 0.10–0.20 | 0.30–0.80 | 0.025 | 0.025 | 0.10–0.50 | . . . | 0.44–0.65 | . . . | |
P2 | K11547 | 0.10–0.20 | 0.30–0.61 | 0.025 | 0.025 | 0.10–0.30 | 0.50–0.81 | 0.44–0.65 | . . . | |
P5 | K41545 | 0.15 max | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 4.00–6.00 | 0.45–0.65 | . . . | |
P5b | K51545 | 0.15 max | 0.30–0.60 | 0.025 | 0.025 | 1.00–2.00 | 4.00–6.00 | 0.45–0.65 | . . . | |
P5c | K41245 | 0.12 max | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 4.00–6.00 | 0.45–0.65 | . . .B | |
P9 | S50400 | 0.15 max | 0.30–0.60 | 0.025 | 0.025 | 0.25–1.00 | 8.00–10.00 | 0.90–1.10 | . . . | |
P11 | K11597 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 | . . . | |
P12 | K11562 | 0.05–0.15 | 0.30–0.61 | 0.025 | 0.025 | 0.50 max | 0.80–1.25 | 0.44–0.65 | . . . | |
P15 | K11578 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 1.15–1.65 | . . . | 0.44–0.65 | . . . | |
P21 | K31545 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 2.65–3.35 | 0.80–1.06 | . . . | |
P22 | K21590 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50 max | 1.90–2.60 | 0.87–1.13 | . . . | |
P23 | K41650 | 0.04–0.10 | 0.10–0.60 | 0.030 max | 0.010 max | 0.50 max | 1.90–2.60 | 0.05–0.30 | V 0.20–0.30 Cb 0.02–0.08 B 0.0005–0.006 N 0.030 max Al 0.030 max W 1.45–1.75 | |
P91 | K91560 | 0.08–0.12 | 0.30–0.60 | 0.020 | 0.010 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 | V 0.18–0.25 N 0.030–0.070 Ni 0.40 max Al 0.04 max Cb 0.06–0.10 | |
P92 | K92460 | 0.07–0.13 | 0.30–0.60 | 0.020 | 0.010 | 0.50 max | 8.50–9.50 | 0.30–0.60 | V 0.15–0.25 N 0.03–0.07 Ni 0.40 max Al 0.04 max Cb 0.04–0.09 W 1.5–2.00 B 0.001–0.006 | |
P122 | K92930 | 0.07–0.14 | 0.70 max | 0.020 | 0.010 | 0.50 max | 10.00–12.50 | 0.25–0.60 | V 0.15–0.30 W 1.50–2.50 Cu 0.30–1.70 Cb 0.04–0.10 B 0.0005–0.005 N 0.040–0.100 Ni 0.50 max Al 0.040 max | |
P911 | K91061 | 0.09–0.13 | 0.30–0.60 | 0.020 max | 0.010 max | 0.10–0.50 | 8.50–10.50 | 0.90–1.10 | V 0.18–0.25 Ni 0.40 max Cb 0.060–0.10 B 0.0003–0.006 N 0.04–0.09 Al 0.04 max W 0.90–1.10 | |
Tensile Requirements
Identification Symbol | P1, P2 | P12 | P23 | P91 | P92, P911 | P122 | All Others |
Tensile strength, min: | |||||||
ksi | 55 | 60 | 74 | 85 | 90 | 90 | 60 |
MPa | 380 | 415 | 510 | 585 | 620 | 620 | 415 |
Yield strength, min: | |||||||
ksi | 30 | 32 | 58 | 60 | 64 | 58 | 30 |
MPa | 205 | 220 | 400 | 415 | 440 | 400 | 205 |
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