1.7715
2014-10-11 10:17:43 Origin： Remark：0 Click：
1.7715 is a low alloy high tensile, high temperature structural steel, 1.7715 Stock Available Round bar, flat bar, plate, and forgings ESR & VAR technique
TECHNICAL DATASHEET - W-Nr 1.7715
MATERIAL CATEGORY: High temperature structural steel
PRODUCT DESCRIPTION
The alloy is usually produced by EAF /VD /LF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition.
Final heat treatment - Quenched and tempered.
MATERIAL SPECIFICATIONS - DIN EN 10028-2 (2003), DIN 17755 (1983)
CHEMICAL COMPOSITIONS (mass fraction - %)
Carbon, C (％): 0.10 ~ 0.18
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.015
Chromium, Cr (％): 0.30 ~ 0.60
Molybdenum, Mo (％): 0.50 ~ 0.70
Nickel, Ni (％) : -
Vanadium, V (％): 0.22 ~ 0.28
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.015
Chromium, Cr (％): 0.30 ~ 0.60
Molybdenum, Mo (％): 0.50 ~ 0.70
Nickel, Ni (％) : -
Vanadium, V (％): 0.22 ~ 0.28
Others (%): Al ≤ 0.020, Sn ≤0.025
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1100～850
Heat treatment temperature /℃ | annealing / normalizing : 680~720
Heat treatment temperature /℃ | quenching: 940~980 air
Heat treatment temperature /℃ | tempering: 630~750
HBW: 145~190
Tensile strength, ≥ Rm / MPa: 490～640
Yield strength, ≥ Rp0.2 / MPa: 345
Elongation, ≥ | A5 (%): 30
Impact, ≥ | AKv / J: 41
Heat treatment temperature /℃ | annealing / normalizing : 680~720
Heat treatment temperature /℃ | quenching: 940~980 air
Heat treatment temperature /℃ | tempering: 630~750
HBW: 145~190
Tensile strength, ≥ Rm / MPa: 490～640
Yield strength, ≥ Rp0.2 / MPa: 345
Elongation, ≥ | A5 (%): 30
Impact, ≥ | AKv / J: 41
MECHANICAL PROPERTY UNDER HIGH TEMPERATURE
Yield strength σ0.2 ≥ MPa|200℃: 284
Yield strength σ0.2 ≥ MPa|300℃: 245
Yield strength σ0.2 ≥ MPa|350℃: 235
Yield strength σ0.2 ≥ MPa|400℃: 226
Yield strength σ0.2 ≥ MPa|450℃: -
Yield strength σ0.2 ≥ MPa|500℃: -
Yield strength σ0.2 ≥ MPa|300℃: 245
Yield strength σ0.2 ≥ MPa|350℃: 235
Yield strength σ0.2 ≥ MPa|400℃: 226
Yield strength σ0.2 ≥ MPa|450℃: -
Yield strength σ0.2 ≥ MPa|500℃: -
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft and pressure vessel parts.
PROFILE AND DIMENSIONS
Round bar / rod / disc (diameter): 5.5 ~ 900mm
Square bar / Flat bar: 10mm to 650mm
Plate / Sheet steel / Steel strip: 0.1mm to 1000mm
Width: 8mm to 1500mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to email or call our resident team of qualified production engineers. E-mail: sales@ccsteels.com
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