30CrNiMo8
2025-09-01 12:46:00 Origin： Remark：0 Click：
Hardened and tempered steel 30CrNiMo8 round bar, stockist, plate, flat bar 30CrNiMo8 forgings Ring, Wire rod, ESR, hot forged & rolled, heat treated
TECHNICAL DATA SHEET - DIN 30CrNiMo8
MATERIAL CATEGORY: hardened and tempered 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, or bright annealing specially.
Final heat treatment - Quenched and tempered.
MATERIAL SPECIFICATIONS - DIN EN 10083-2 (2006), DIN 17200 (1987)
CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): 0.26 ~ 0.34
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 1.80 ~ 2.20
Molybdenum, Mo (％): 0.30 ~ 0.50
Nickel, Ni (％): 1.80 ~ 2.20
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 1.80 ~ 2.20
Molybdenum, Mo (％): 0.30 ~ 0.50
Nickel, Ni (％): 1.80 ~ 2.20
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1050～850
Heat treatment temperature /℃ | annealing: 650～700
Heat treatment temperature /℃ | annealing: 650～700
Heat treatment temperature /℃ | Normalizing: 850～880
Heat treatment temperature /℃ | Quenching: 830~ 860 oil
Heat treatment temperature /℃ | Tempering: 540～680
Hardness after annealing ≤ HBS: 248
Heat treatment temperature /℃ | Quenching: 830~ 860 oil
Heat treatment temperature /℃ | Tempering: 540～680
Hardness after annealing ≤ HBS: 248
Steel dimension / mm: ≤16
Tensile strength, σb ≥ MPa: 1250 ~ 1450
Yield strength, σs ≥ MPa: 1050
Elongation, δ5 ≥ (%): 9.0
Reduction of area, ψ ≥ (%): 40.0
Impact, AKV ≥ J: 35
Tensile strength, σb ≥ MPa: 1250 ~ 1450
Yield strength, σs ≥ MPa: 1050
Elongation, δ5 ≥ (%): 9.0
Reduction of area, ψ ≥ (%): 40.0
Impact, AKV ≥ J: 35
Steel dimension /mm: 17 - 40
Tensile strength, σb ≥ MPa: 1250 ~ 1450
Yield strength, σs ≥ MPa: 1050
Elongation, δ5 ≥ (%): 9.0
Tensile strength, σb ≥ MPa: 1250 ~ 1450
Yield strength, σs ≥ MPa: 1050
Elongation, δ5 ≥ (%): 9.0
Reduction of area, ψ ≥ (%): 40.0
Impact strrength, AKv ≥ J: 35
Impact strrength, AKv ≥ J: 35
PROFILE / DIMENSION
Round bar / rod (diameter): 5.0 to 800mm
Square bar / flat bar: 10 to 600mm
Plate / Steel strip: 0.5mm to 1000mm
Width: 8 to 1000mm
Steel plate: thickness 1.0 ~ 400mm, width 1000mm X length 1000 / 2000mm - Standard size
Length: random length or based on the customer's special requirement
Forged steel shape: 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.
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 or help, pleased to email or call our resident team of qualified production engineers. E-mail: sales@ccsteels.com
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