ASTM A335
ASTM A335 Basic Info
ASTM A335 steel is a seamless ferritic alloy pipe. It’s used in high-temperature industries like power plants. Known for strength and corrosion resistance, it handles high pressures. Ideal for boilers and heat exchangers. Available in various grades for different needs. Durable and reliable in high-stress environments.
Characteristics of ASTM A335
- High-Temperature Resistance: Suitable for use in high-temperature environments.
- Corrosion Resistance: Offers excellent protection against corrosion.
- High Strength: Capable of withstanding high pressures.
- Seamless Construction: Ensures structural integrity and reliability.
- Versatile Grades: Available in multiple grades tailored to specific applications.
- Durability: Long-lasting performance in harsh conditions.
ASTM A335 Data Sheet
Steel Grade
Dimensions and Tolerances
Chemical Composition
Mechanical Properties
Steel Grade
P1:
- Germany (DIN/EN): 15Mo3 (1.5415)
- Japan (JIS): STPA 12
- China (GB/T): 10CrMo910
- UK (BS): 1501-620-460
P2:
- Germany (DIN/EN): 16Mo3 (1.5415)
- Japan (JIS): STPA 20
- China (GB/T): 12CrMo195
- UK (BS): 1501-620-490
P5:
- Germany (DIN/EN): 12CrMo195 (1.7362)
- Japan (JIS): STPA 25
- China (GB/T): 12Cr1MoVG
- UK (BS): 1501-620-520
P9:
- Germany (DIN/EN): X10CrMoVNb9-1 (1.4903)
- Japan (JIS): STPA 26
- China (GB/T): 12Cr2MoWVTiB
- UK (BS): 1501-621-640
P11:
- Germany (DIN/EN): 13CrMo4-5 (1.7335)
- Japan (JIS): STPA 22
- China (GB/T): 15CrMo
- UK (BS): 1501-622-490
P12:
- Germany (DIN/EN): 10CrMo9-10 (1.7380)
- Japan (JIS): STPA 23
- China (GB/T): 12Cr1MoV
- UK (BS): 1501-622-520
P15:
- Germany (DIN/EN): 14MoV6-3 (1.7715)
- Japan (JIS): STPA 24
- China (GB/T): 12Cr1MoV
- UK (BS): 1501-622-520
P21:
- Germany (DIN/EN): 15NiCuMoNb5 (1.6368)
- Japan (JIS): STPA 28
- China (GB/T): 10CrMoAl
- UK (BS): 1501-622-460
P22:
- Germany (DIN/EN): 10CrMo9-10 (1.7380)
- Japan (JIS): STPA 23
- China (GB/T): 12Cr2MoWNTiB
- UK (BS): 1501-622-520
P23:
- Germany (DIN/EN): X20CrMoV11-1 (1.4922)
- Japan (JIS): STPA 27
- China (GB/T): 10CrMoWTiB
- UK (BS): 1501-622-640
P24:
- Germany (DIN/EN): X12CrMoWVNbN10-1-1 (1.4500)
- Japan (JIS): STPA 30
- China (GB/T): 12CrMoW
- UK (BS): 1501-622-640
P91:
- Germany (DIN/EN): X10CrMoVNb9-1 (1.4903)
- Japan (JIS): STPA 29
- China (GB/T): 10Cr9Mo1VNb
- UK (BS): 1501-622-640
P92:
- Germany (DIN/EN): X10CrWMoVNb9-2-1 (1.4901)
- Japan (JIS): STPA 31
- China (GB/T): 10Cr9Mo2VNb
- UK (BS): 1501-622-640
P122:
- Germany (DIN/EN): X12CrMoWVNb10-2-1 (1.4906)
- Japan (JIS): STPA 32
- China (GB/T): 12Cr2MoWNTiB
- UK (BS): 1501-622-640
P911:
- Germany (DIN/EN): X10CrMoVNb9-1 (1.4903)
- Japan (JIS): STPA 29
- China (GB/T): 10Cr9Mo1VNb
- UK (BS): 1501-622-640
Dimensions and Tolerances
Outside Diameter (OD): 1/8″ to 30″ (Nominal Pipe Size)
Wall Thickness: schedule 20 to XXH, SCH 5, SCH 10, SCH 40, SCH 80, SCH 160
Length:
Single Random Length (17-24 feet)
Double Random Length (24-34 feet)
Custom lengths as required
Tolerance on OD:
± 1% for OD ≤ 1.5″
± 0.75% for OD > 1.5″ ≤ 4″
± 0.5% for OD > 4″
Tolerance on Wall Thickness:
-12.5% of the nominal wall thickness
Length Tolerance: 1/8″, -0
End Finish: Plain ends, beveled ends, threaded ends
Straightness: 0.005″ per inch of length
Surface Finish: As specified, typically mill finished or pickled
Chemical Composition
P1:
- Carbon (C): 0.10-0.20%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.10-0.50%
- Chromium (Cr): 0.40-0.65%
- Molybdenum (Mo): 0.45-0.65%
P2:
- Carbon (C): 0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.10-0.50%
- Chromium (Cr): 0.44-0.65%
- Molybdenum (Mo): 0.45-0.65%
P5:
- Carbon (C): 0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 4.00-6.00%
- Molybdenum (Mo): 0.45-0.65%
P9:
- Carbon (C): 0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 8.00-10.00%
- Molybdenum (Mo): 0.90-1.10%
P11:
- Carbon (C): 0.05-0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 1.00-1.50%
- Molybdenum (Mo): 0.44-0.65%
P12:
- Carbon (C): 0.05-0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 0.80-1.25%
- Molybdenum (Mo): 0.44-0.65%
P15:
- Carbon (C): 0.05-0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 0.30-1.00%
- Molybdenum (Mo): 0.30-1.00%
P21:
- Carbon (C): 0.10-0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 2.65-3.35%
- Molybdenum (Mo): 0.90-1.10%
- Nickel (Ni): 0.40%
P22:
- Carbon (C): 0.05-0.15%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.025%
- Silicon (Si): 0.50%
- Chromium (Cr): 1.90-2.60%
- Molybdenum (Mo): 0.87-1.13%
P23:
- Carbon (C): 0.03-0.10%
- Manganese (Mn): 0.10-0.60%
- Phosphorus (P): ≤0.020%
- Sulfur (S): ≤0.010%
- Silicon (Si): ≤0.50%
- Chromium (Cr): 1.90-2.60%
- Molybdenum (Mo): 0.25-0.60%
- Nickel (Ni): 0.25 max
- Vanadium (V): 0.20-0.30%
- Others: Nb: 0.03-0.07%, B: 0.0005-0.006%
P24:
- Carbon (C): 0.04-0.10%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.020%
- Sulfur (S): ≤0.010%
- Silicon (Si): ≤0.50%
- Chromium (Cr): 2.20-2.60%
- Molybdenum (Mo): 1.80-2.20%
- Nickel (Ni): 0.20-0.50%
- Vanadium (V): 0.20-0.30%
- Others: Nb: 0.03-0.07%
P91:
- Carbon (C): 0.08-0.12%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.020%
- Sulfur (S): ≤0.010%
- Silicon (Si): 0.20-0.50%
- Chromium (Cr): 8.00-9.50%
- Molybdenum (Mo): 0.85-1.05%
- Nickel (Ni): 0.18-0.25%
- Vanadium (V): 0.18-0.25%
- Others: Nb: 0.06-0.10%, N: 0.03-0.07%
P92:
- Carbon (C): 0.07-0.13%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.020%
- Sulfur (S): ≤0.010%
- Silicon (Si): ≤0.50%
- Chromium (Cr): 8.50-9.50%
- Molybdenum (Mo): 0.30-0.60%
- Nickel (Ni): 0.40 max
- Vanadium (V): 0.15-0.25%
- Others: Nb: 0.04-0.09%, N: 0.03-0.07%
P122:
- Carbon (C): 0.07-0.13%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.020%
- Sulfur (S): ≤0.010%
- Silicon (Si): ≤0.50%
- Chromium (Cr): 10.00-12.00%
- Molybdenum (Mo): 0.30-0.60%
- Nickel (Ni): 0.40 max
- Vanadium (V): 0.15-0.25%
- Others: Nb: 0.04-0.09%, N: 0.03-0.07%
P911:
- Carbon (C): 0.08-0.12%
- Manganese (Mn): 0.30-0.60%
- Phosphorus (P): ≤0.020%
- Sulfur (S): ≤0.010%
- Silicon (Si): ≤0.50%
- Chromium (Cr): 8.50-9.50%
- Molybdenum (Mo): 0.85-1.05%
- Nickel (Ni): 0.18-0.25%
- Vanadium (V): 0.18-0.25%
- Others: Nb: 0.06-0.10%, N: 0.03-0.07%
Mechanical Properties
P1:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 137-170 HBW
P2:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 137-170 HBW
P5:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 156-197 HBW
P9:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 156-197 HBW
P11:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 143-197 HBW
P12:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 148-197 HBW
P15:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 137-170 HBW
P21:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 156-197 HBW
P22:
- Tensile Strength: 415 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 30% (min)
- Hardness: 156-197 HBW
P23:
- Tensile Strength: 510 MPa (min)
- Yield Strength: 205 MPa (min)
- Elongation: 20% (min)
- Hardness: 143-170 HBW
P24:
- Tensile Strength: 520 MPa (min)
- Yield Strength: 310 MPa (min)
- Elongation: 20% (min)
- Hardness: 180-260 HBW
- Impact Toughness: 27 J (at -20°C)
- Note: Requires heat treatment
P91:
- Tensile Strength: 620 MPa (min)
- Yield Strength: 415 MPa (min)
- Elongation: 20% (min)
- Hardness: 220 HBW (max)
- Impact Toughness: 27 J (at -20°C)
- Note: Requires heat treatment
P92:
- Tensile Strength: 620 MPa (min)
- Yield Strength: 415 MPa (min)
- Elongation: 20% (min)
- Hardness: 220 HBW (max)
- Impact Toughness: 27 J (at -20°C)
- Note: Requires heat treatment
P122:
- Tensile Strength: 620 MPa (min)
- Yield Strength: 415 MPa (min)
- Elongation: 20% (min)
- Hardness: 220 HBW (max)
- Impact Toughness: 27 J (at -20°C)
- Note: Requires heat treatment
P911:
- Tensile Strength: 585 MPa (min)
- Yield Strength: 415 MPa (min)
- Elongation: 20% (min)
- Hardness: 220 HBW (max)
- Impact Toughness: 27 J (at -20°C)
- Note: Requires heat treatment
What Environments Are ASTM A335 Pipes Suitable for?
ASTM A335 pipes are primarily suitable for high-temperature and high-pressure environments. Common applications include boilers and superheaters in power plants, heaters in refineries, and high-temperature piping systems in chemical plants. These pipes maintain excellent mechanical properties and oxidation resistance under extreme conditions, making them ideal for such applications.
