1.4700
2026-02-10 14:25:00 Origin： Remark：0 Click：
Heat resisting steel 1.4700 solution heat treated round bar, flat bar 8CrSi7-7 plate from steelmaking, hot forged, hot rolled, cold worked
TECHNICAL DATA SHEET - 8CrSi7-7 & 1.4700
MATERIAL CATEGORY - heat resisting steel 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.
MATERIAL SPECIFICATIONS - DIN 17442,17744, DIN EN 10302, 10095 (2002/1999)
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.
MATERIAL SPECIFICATIONS - DIN 17442,17744, DIN EN 10302, 10095 (2002/1999)
TYPICAL CHEMICAL COMPOSITION (mass fraction %)
Carbon, C (％): ≤ 0.10
Silicon, Si (％): 1.50～1.80
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.045
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 1.50～2.00
Nickel, Ni (％): -
Carbon, C (％): ≤ 0.10
Silicon, Si (％): 1.50～1.80
Manganese, Mn (％): ≤ 1.00
Phosphorus, P (％): ≤ 0.045
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 1.50～2.00
Nickel, Ni (％): -
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Hardness ≤ HBS: 192
Thermal forming temp / ℃: 1150～800
Heat treatment temp /℃ | soft annealing: 930～950
Heat treatment temp / ℃ | quenching: -
Hardness ≤ HBS: 192
Thermal forming temp / ℃: 1150～800
Heat treatment temp /℃ | soft annealing: 930～950
Heat treatment temp / ℃ | quenching: -
Condition: quenched
Tensile strength, σb / MPa: 490～640
Yield strength, σs ≥ MPa: 295
Elongation, δ5 ≥ (％): 20.0
Tensile strength, σb / MPa: 490～640
Yield strength, σs ≥ MPa: 295
Elongation, δ5 ≥ (％): 20.0
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Condition: annealed
Creep limit (1000h) / MPa，at below temp / ℃ | 600: 20
Creep limit (1000h) / MPa，at below temp / ℃ | 700: -
Creep limit (1000h) / MPa，at below temp / ℃ | 800: -
Creep limit (1000h) / MPa，at below temp / ℃ | 900: -
Creep limit (1000h) / MPa，at below temp / ℃ | 1000: -
Creep limit (1000h) / MPa，at below temp / ℃ | 1100: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 600: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 700: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 800: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 900: -
Heat resistance temperature in air / ℃: 600
Condition: annealed
Creep limit (1000h) / MPa，at below temp / ℃ | 600: 20
Creep limit (1000h) / MPa，at below temp / ℃ | 700: -
Creep limit (1000h) / MPa，at below temp / ℃ | 800: -
Creep limit (1000h) / MPa，at below temp / ℃ | 900: -
Creep limit (1000h) / MPa，at below temp / ℃ | 1000: -
Creep limit (1000h) / MPa，at below temp / ℃ | 1100: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 600: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 700: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 800: -
Creep rupture strenght (1000h) / MPa，at below temp / ℃ | 900: -
Heat resistance temperature in air / ℃: 600
PRODUCT PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: 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: T0.3 ~ 3 X W15 ~ 200 X L mm (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 ~ 2000 mm
Steel strip via cold rolled: T0.3 ~ 3 X W15 ~ 200 X L mm (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
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
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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