1.2731
2025-08-18 14:41:00 Origin： Remark：0 Click：
EN 10090 Specifications 1.2731 ESR ingot, round bar, flat bar stock available, blooming, forging, rolling,heat treatment,straightened,ultrasonic test,cold worked
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
TECHNICAL DATA SHEET - W-Nr 1.2731
MATERIAL CATEGORY - Valve steel
MATERIAL SPECIFICATIONS - DIN EN 10090 (1998), DIN 17480 (1992)
CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.45 ~ 0.55
Silicon, Si (％): 1.20 ~ 1.50
Manganese, Mn (％): 0.60 ~ 0.80
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 12.0 ~ 14.0
Nickel, Ni (％): 12.5 ~ 13.5
Molybdenum, Mo (％): -
Tungsten, W (％): 1.50 ~ 2.80
Silicon, Si (％): 1.20 ~ 1.50
Manganese, Mn (％): 0.60 ~ 0.80
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 12.0 ~ 14.0
Nickel, Ni (％): 12.5 ~ 13.5
Molybdenum, Mo (％): -
Tungsten, W (％): 1.50 ~ 2.80
Vanadium, V (%): 0.30 ~ 1.00
MECHANICAL PROPERTIES / HEAT TREATMENT OR Q/T
Hot forming temperature /℃: 1050～850
Heat treatment temperature and cooling method | annealed: -
Heat treatment temperature and cooling method | quenched: 1000～1050 oil/water
Heat treatment temperature and cooling method | tempered: 700~750
Mechanical property |σb/MPa: 780～980
Mechanical property |σs≥/MPa: 390
Mechanical property |δ5≥(％): 25
Mechanical property |ψ≥(％): 35
Mechanical property above 400℃ σb/MPa，at following temperature /℃|400: -
Mechanical property above 400℃ σb/MPa，at following temperature /℃|500: 660
Mechanical property above 400℃ σb/MPa，at following temperature /℃|600: 560
Mechanical property above 400℃ σb/MPa，at following temperature /℃|700: 410
Mechanical property above 400℃ σb/MPa，at following temperature /℃|800: 260
Hot forming temperature /℃: 1050～850
Heat treatment temperature and cooling method | annealed: -
Heat treatment temperature and cooling method | quenched: 1000～1050 oil/water
Heat treatment temperature and cooling method | tempered: 700~750
Mechanical property |σb/MPa: 780～980
Mechanical property |σs≥/MPa: 390
Mechanical property |δ5≥(％): 25
Mechanical property |ψ≥(％): 35
Mechanical property above 400℃ σb/MPa，at following temperature /℃|400: -
Mechanical property above 400℃ σb/MPa，at following temperature /℃|500: 660
Mechanical property above 400℃ σb/MPa，at following temperature /℃|600: 560
Mechanical property above 400℃ σb/MPa，at following temperature /℃|700: 410
Mechanical property above 400℃ σb/MPa，at following temperature /℃|800: 260
REMELTING PROCESS
Valve steel is generally smelt in electric arc furnace or induction furnace. For higher quality,it should be smelt via technology of vacuum refining and external refining.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
PRODUCT PROFILE AND DIMENSIONS
Round bar / rod / disc (diameter): 5.5 to 800mm
Square bar / flat bar: 8 to 600mm
Length: random length or based on the customer's special requirement.
Round bar / rod / disc (diameter): 5.5 to 800mm
Square bar / flat bar: 8 to 600mm
Length: random length or based on the customer's special requirement.
Heavy / middle plate via hot rolled: T60 - 400 X W60 - 1000mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6 X W60 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3 X W5 - 200 X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
Sheet steel via cold rolled: T0.5 - 6 X W60 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3 X W5 - 200 X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
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