1.4951 / X6CrNi25-20
2025-12-11 09:02:00 Origin： Remark：0 Click：
Technical specifications of DIN 1.4951 austenitic creep-resisting steel, round bar, flat bar, plate, sheet, X6CrNi25-20 ESR, hot bloomed, forged, rolled, heat treated
TECHNICAL DATA SHEET - X6CrNi25-20 & 1.4951
MATERIAL CATEGORY: austenitic creep-resisting steels
FEATURES AND CLASSIFICATIONS
Heat-resistant steel means one type of steel possesses inoxidizability, enough high-temperature strength and excellent heat-resistant quality under high temperature. Heat resistant steel is divided into oxidation resistant steel and refractory steel according to its performance. Further into Austenitic heat-resistant steel, Martensitic heat-resistant steel, Ferritic heat-resistant steel and Pearlitic heat-resistant steel according to its normalizing.
Austenitic steels - Contains more austenite formative elements like Chromium, manganese, nitrogien. At temperature above 600℃, which possess superior high temerature strength, structure stability, excellent weldability. and representative steel grades are 1Cr18Ni9Ti（321), 1Cr23Ni13（309), 0Cr25Ni20 （310S), 1Cr25Ni20Si2（314), 2Cr20Mn9Ni2Si2N, 4Cr14Ni14W2Mo.
Heat-resistant steel means one type of steel possesses inoxidizability, enough high-temperature strength and excellent heat-resistant quality under high temperature. Heat resistant steel is divided into oxidation resistant steel and refractory steel according to its performance. Further into Austenitic heat-resistant steel, Martensitic heat-resistant steel, Ferritic heat-resistant steel and Pearlitic heat-resistant steel according to its normalizing.
Austenitic steels - Contains more austenite formative elements like Chromium, manganese, nitrogien. At temperature above 600℃, which possess superior high temerature strength, structure stability, excellent weldability. and representative steel grades are 1Cr18Ni9Ti（321), 1Cr23Ni13（309), 0Cr25Ni20 （310S), 1Cr25Ni20Si2（314), 2Cr20Mn9Ni2Si2N, 4Cr14Ni14W2Mo.
MATERIAL SPECIFICATIONS - DIN 17442,17744, DIN EN 10302, 10095 (2002/1999), EN 10088-1 (2005)
CHEMICAL COMPOSITION (mass weight %)
Carbon, C (％): 0.04 ~ 0.08
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 2.00
Silicon, Si (％): ≤ 0.70
Manganese, Mn (％): ≤ 2.00
Phosphorus, P (％): ≤ 0.035
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 24.0 ~ 26.0
Nickel, Ni (％): 19.0 ~ 22.0
Sulfur, S (％): ≤ 0.015
Chromium, Cr (％): 24.0 ~ 26.0
Nickel, Ni (％): 19.0 ~ 22.0
Molybdenum, Mo (%): -
Titanium, Ti (%): -
Tungsten, W (%): -
Nitrogen, N (%): ≤ 0.11
Vanadium, V (%): -
Aluminum, Al (%): -
Ferrum, Fe (％): balance.
MECHANICAL PROPERTIES (FINAL HEAT TREATMENT OR Q/T) UNDER ROOM TEMPERATURE
Condition: solution treatment
Tensile strength, σb / MPa: 550 min.
Tensile strength, σb / MPa: 550 min.
Yield strength, σs ≥ MPa: 255 min.
Elongation, δ5 ≥ (％): 40
Elongation, δ5 ≥ (％): 40
APPLICATION FIELD
Heat-resistant steel is widely used in the field of manufacturing the boiler, steam turbine, motive power machine, industrial furnace, and other mechanical parts of aviation, petrochemical engineering operating at high temperature. Those parts must hold the features: high temperature strength, resistance to high temperature oxide etch, enough toughness, excellent machinability, weldability, structure stability based on different usages.
Heat-resistant steel is widely used in the field of manufacturing the boiler, steam turbine, motive power machine, industrial furnace, and other mechanical parts of aviation, petrochemical engineering operating at high temperature. Those parts must hold the features: high temperature strength, resistance to high temperature oxide etch, enough toughness, excellent machinability, weldability, structure stability based on different usages.
MANUFACTURING TECHNOLOGY - SMELTING
Heat resistant 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.
Heat resistant 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
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PRODUCT PROFILE
Round bar / rod / disc (diameter): 6.0 to 800 mm
Square bar / flat bar: 8 to 600 mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar / rod / disc (diameter): 6.0 to 800 mm
Square bar / flat bar: 8 to 600 mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200 X W10 - 1500 X L1000 ~ 12000 mm
Sheet steel via cold rolled: T0.5 - 6 X W60 - 1000 X L1000 - 2000 mm
Steel strip via cold rolled: T0.5 - 3 X W5 - 200 X L mm (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM
Steel strip via cold rolled: T0.5 - 3 X W5 - 200 X L mm (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM
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