1.6523
2015-01-24 15:54:15 Origin： Remark：0 Click：
Carburizing structural steel 1.6523 Round bar, Flat bar, Plate 1.6523 Shaft Steelmaking, ESR, blooming, hot forging, rolling, heat treatment
TECHNICAL DATASHEET -20NiCrMo2-2 & W-Nr 1.6523
MATERIAL CATEGORY: Carburizing structural steel
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.
Final heat treatment - Quenched and tempered.
MATERIAL SPECIFICATIONS - DIN EN 10084 (1998), DIN 17210 (1986)
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.17 ~ 0.23
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.65 ~ 0.95
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 0.35 ~ 0.70
Molybdenum, Mo (％): 0.15 ~ 0.25
Nickel, Ni (％): 0.40 ~ 0.70
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.65 ~ 0.95
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 0.35 ~ 0.70
Molybdenum, Mo (％): 0.15 ~ 0.25
Nickel, Ni (％): 0.40 ~ 0.70
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1150～850
Heat treatment temperature /℃ | annealing: 650～700
Heat treatment temperature /℃ | carburizing: 900～950
Heat treatment temperature /℃ | quenching (Center): 840～870
Heat treatment temperature /℃ | quenching (Surface): 800~830 Oil
Heat treatment temperature /℃ | tempering: 170～210
Hardness after annealing HBS ≤: 197
Heat treatment temperature /℃ | annealing: 650～700
Heat treatment temperature /℃ | carburizing: 900～950
Heat treatment temperature /℃ | quenching (Center): 840～870
Heat treatment temperature /℃ | quenching (Surface): 800~830 Oil
Heat treatment temperature /℃ | tempering: 170～210
Hardness after annealing HBS ≤: 197
Size /mm: φ11
After surface hardening | σb / MPa: 980~1270
After surface hardening | σb / MPa: 980~1270
After surface hardening | σs ≥ MPa: 785
After surface hardening | δ5 (％) ≥: 9.0
After surface hardening | ψ (％) ≥: 35.0
After surface hardening | δ5 (％) ≥: 9.0
After surface hardening | ψ (％) ≥: 35.0
After surface hardening | AKv / J: 41
|size / mm: φ30| σb / MPa: 780~1080
| σs ≥ / MPa: 590
| δ5 (％) ≥: 10.0
| ψ (％) ≥: 40.0
| AKv / J: 41
| σb / MPa: 690~930
| σs≥ / MPa: 490
| δ5 (％) ≥: 11.0
| ψ (％) ≥: 40.0
| AKv / J: -
| σs≥ / MPa: 490
| δ5 (％) ≥: 11.0
| ψ (％) ≥: 40.0
| AKv / J: -
PRODUCT PROFILE & DIMENSION
Round bar / rod / disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
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: T6 - 300mm X W10 - 1500mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W60 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM
Sheet steel via cold rolled: T0.5 - 6mm X W60 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM
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.
Process plant – fasteners.
Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft and pressure vessel.
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.
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