S41800
2026-07-29 21:05:00 Origin： Remark：0 Click：
Martensitic steel S41800 round bar, flat bar S41800 fitings requiring corrosion resistance and high strength at room and elevated 260℃ temperature
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - CNAS
TECHNICAL DATA SHEET - UNS S41800
Material category: martensitic high content chromium round bar and forge piece
Technical specification: ASTM A565
Stock available: round bar, steel strip, flat bar
Typical chemical compositions (mass fraction - %)
Carbon, C (％): 0.15 ~ 0.20
Silicon, Si (％): ≤ 0.50
Manganese, Mn (％): ≤ 0.50
Phosphorus, P (％) ≤: 0.040
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 12.0 ~ 14.0
Nickel, Ni (％): 1.80 ~ 2.20
Molybdenum, Mo (％): ≤ 0.50
Tungsten, W (％): 2.50 ~ 3.50
Silicon, Si (％): ≤ 0.50
Manganese, Mn (％): ≤ 0.50
Phosphorus, P (％) ≤: 0.040
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 12.0 ~ 14.0
Nickel, Ni (％): 1.80 ~ 2.20
Molybdenum, Mo (％): ≤ 0.50
Tungsten, W (％): 2.50 ~ 3.50
MECHANICAL PROPERTIES & HEAT TREATMENT.
Condition of heat treatment: annealed
Tensile strength, Rm ≥ MPa: -
Yield strength, Rp0.2 ≥ MPa:-
Yield strength, Rp0.2 ≥ MPa:-
Elongation, A5 ≥ (％): -
Reduction of area, Z ≥ (％): -
Hardness | HBW: ≤ 311
Reduction of area, Z ≥ (％): -
Hardness | HBW: ≤ 311
Condition of heat treatment: HT 981℃ ~ 1080℃ air or oil cooled, ≥620℃ X 2H, double tempered
Tensile strength, Rm ≥ MPa: 965
Yield strength, Rp0.2 ≥ MPa: 760
Yield strength, Rp0.2 ≥ MPa: 760
Elongation, A5 ≥ (％): 15.0
Reduction of area, Z ≥ (％): 45.0
Hardness | HBW: 302 ~ 352
Reduction of area, Z ≥ (％): 45.0
Hardness | HBW: 302 ~ 352
PRODUCT DESCRIPTION
S41800 is usually produced by BEF + AOD / EAF followed by electroslag refining (ESR) / VAR if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment - Quenched and tempered.
S41800 is usually produced by BEF + AOD / EAF followed by electroslag refining (ESR) / VAR if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment - Quenched and tempered.
PRODUCT PROFILE & DIMENSIONS
Round bar & rod 7 disc (diameter): 6.0 ~ 800 mm
Square bar & flat bar: 8 to 600 mm
Length: random length or based on the customer's special requirement.
Square bar & flat bar: 8 to 600 mm
Length: random length or based on the customer's special requirement.
Steel strip via cold rolled: T0.5 - 3 X W5 - 300 X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
Forging piece: stepped shafts, and other different shapes based on OEM.
Chemical equipment and parts.
Mechanical parts used in the condition of corrosion resistance.
Automobile parts, exhaust pipe. Electronics, and turbine motor blade. Forged Valve, pressure vessel.
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