17.0Cr - 0.68C stainless steel 440A
2026-09-18 08:38:39 Origin： Remark：0 Click：
ASTM A511/511M - 12 Standard specification for seamless stainless steel mechanical tubing Martensitic steel 440A round bar, flat bar, plate, forgings stock available
TECHNICAL DATA SHEET - MT 440A
Material specifications: ASTM A511 / 511M - 12
Material category: martensitic type 17.0Cr - 0.68C iron base steel
Official test certificate: issued by TUV - SGS - CNAS
Stock available: round bar, sheet, plate, flat bar.
PRODUCT DESCRIPTION
Steel 440A is usually produced by EAF / AOD followed by electro-slag 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 in the annealed, peeled condition.
Final heat treatment: quenched and tempered, + SRA.
Material category: martensitic type 17.0Cr - 0.68C iron base steel
Official test certificate: issued by TUV - SGS - CNAS
Stock available: round bar, sheet, plate, flat bar.
PRODUCT DESCRIPTION
Steel 440A is usually produced by EAF / AOD followed by electro-slag 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 in the annealed, peeled condition.
Final heat treatment: quenched and tempered, + SRA.
PROFILES AND DIMENSIONS
Round bar, rod, disc (diameter): 6.0 ~ 900 mm
Square bar, flat bar: 10 ~ 600 mm
Length: random length or based on the customer's special requirement.
Heavy, middle plate via hot rolled / forged: T3.0 ~ 400 X W20 ~ 1200 X L mm
Sheet steel via cold rolled: T 0.5 ~ 3 X W15 ~ 1000 X L mm
Steel strip via cold rolled: T 0.5 ~ 3.0 X W20 ~ 300 X L mm (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Carbon, C (％): 0.60 ~ 0.75
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Silicon, Si (％): ≤ 1.00
Nickel, Ni (％): -
Chromium, Cr (％): 16.0 ~ 18.0
Molybdenum, Mo (％): ≤ 0.75
Aluminum, Al (%): -
Copper, Cu (%): -
Nitrogen, N (%):
Ferrum, Fe (%): balance.
TYPICAL MECHANICAL PROPERTIES
Heat treatment practice:
Quenching 1010 ~ 1070 degree centigrade, oil cooling
Tempering 100 ~ 180 degree centigrade, quick cooling.
Tensile strength, Rm ≥ MPa: -
Yield strength, Rp0.2 ≥ MPa: -
Yield strength, Rp0.2 ≥ MPa: -
Elongation, A5 ≥ (％): -
Reduction of area, Z ≥ (％): -
Hardness via heat treatment, HRC: 54
Reduction of area, Z ≥ (％): -
Hardness via heat treatment, HRC: 54
TECHNICAL SALES ASSISTANCE & SERVICE
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
20+ years focus on special steel manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
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