20CrMoVTiB4-10
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EN 10269 Specifications 20CrMoVTiB4-10 Round bar, Flat bar, Shaft 20CrMoVTiB4-10 properties from Steelmaking, ESR melted, heat treatment.
TECHNICAL DATASHEET - DIN 20CrMoVTiB4-10
MATERIAL CATEGORY - BS EN 10269: 1999
PRODUCT DESCRIPTION
Alloy structural steel is provided with higher yield strength, tensile strength, endurance strength, yield ratio (about 0.85 generally ) enough plasticity and toughness.
The concentration of alloy element of this kind of steel is quite high, mainly are corrosion resistant steel, heat resistant steel, wear resistant steel, and other special steels of physical and chemical properties. Alloy structural steel has preferable mechanical property than that of carbon structural steel, high performance of heat treatment especially.
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, or bright annealing specially.
Final heat treatment - heat treatment / QT
Density (kg/m3): 7.83 at room temp.20 degreee C
MATERIAL SPECIFICATIONS - DIN EN 10269 (1999), NF A35-558 (1983)
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.17 ~ 0.23
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.35 ~ 0.75
Phosphorus, P (％) ≤: 0.020
Sulfur, S (％) ≤: 0.020
Chromium, Cr (％): 0.90 ~ 1.20
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.35 ~ 0.75
Phosphorus, P (％) ≤: 0.020
Sulfur, S (％) ≤: 0.020
Chromium, Cr (％): 0.90 ~ 1.20
Molybdenum, Mo (％): 0.90 ~ 1.10
Nickel, Ni (%): ≤ 0.20
Copper, Cu (％): ≤ 0.20
Copper, Cu (％): ≤ 0.20
Vanadium, V (%): 0.60 ~ 0.80
Titanium, Ti (%): 0.07 ~ 0.15
Boron, B (%): 0.001 ~ 0.010
Others (%): Aluminum 0.015 ~ 0.080, As ≤0.020, Sn ≤0.020
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Pre-treatment temperature /℃: 660～700
Heat treatment temperature /℃| annealing: -
Heat treatment temperature /℃| annealing: -
Heat treatment temperature /℃| Normalizing: -
Heat treatment temperature /℃| Quenching: 970~990 Oil
Heat treatment temperature /℃| Tempering : 680~720
Hardness after annealing ≤HBS: -
Heat treatment temperature /℃| Quenching: 970~990 Oil
Heat treatment temperature /℃| Tempering : 680~720
Hardness after annealing ≤HBS: -
Steel dimension /mm: 100
|σb≥/MPa: 820~1000
|σs≥/MPa: 660min.
|δ5≥/(%): 15
|ψ≥/(%): 50
|AKV≥/J: 40
|σb≥/MPa: 820~1000
|σs≥/MPa: 660min.
|δ5≥/(%): 15
|ψ≥/(%): 50
|AKV≥/J: 40
Steel dimension /mm: 100<d<200
|σb≥/MPa: 820~1000
|σs≥/MPa: 660min.
|δ5≥/(%): 15
|ψ≥/(%): 50
|σb≥/MPa: 820~1000
|σs≥/MPa: 660min.
|δ5≥/(%): 15
|ψ≥/(%): 50
PROFILE & DIMENSIONS
Round bar / Disc (diameter): 5.5mm to 500mm
Square bar / Flat bar: 10mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 400mm X W50 - 1000mm X L1000 - 5000mm
Heavy/middle plate via hot rolled: T60 - 400mm X W50 - 1000mm X L1000 - 5000mm
Sheet steel via cold rolled: T0.5 - 6mm X W600- 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
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.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod
Mechanical parts - connecting rod, bolt and nut
Multidiameter shaft
Pressure vessel, seamless pipe
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry, pleased to email or call our resident team of qualified production engineers, Email: sales@ccsteels.com.
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