25NCD15
2025-12-29 13:14:00 Origin： Remark：0 Click：
Technical specifications of NF inactive standards structure steel 25NCD15 round bar, flat bar, plate, rod, steelmaking, ESR melted, hot bloomed, hot forged, hot rolled, heat treated
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL DATA SHEET - 25NCD15
Typical chemical compositions (mass weight %)
Carbon, C (％): 0.20 ~ 0.30
Silicon, Si (％): 0.10 ~ 0.35
Silicon, Si (％): 0.10 ~ 0.35
Manganese, Mn (％): 0.20 ~ 0.50
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.025
Chromium, Cr (％): 1.10 ~ 1.40
Nickel, Ni (％): 3.70 ~ 4.20
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.025
Chromium, Cr (％): 1.10 ~ 1.40
Nickel, Ni (％): 3.70 ~ 4.20
Molybdenum, Mo (%): 0.35 ~ 0.60
Ferrum, Fe (％): balance.
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Tensile strength, σb / MPa ≥: 1130 ~ 1320
Yield strength, σs / MPa ≥: 885
Elongation, A5 (％) ≥: 8.0
Yield strength, σs / MPa ≥: 885
Elongation, A5 (％) ≥: 8.0
Delivery hardness, HBS ≥: -
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 - QT.
AVAILABLE SHAPES
Round bar /Flat bar / Square bar /Tube, /Steel strip, /sheet
Bright - peeled + polishing, centerless grinding
Forged - ring, discs, shaft
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
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
PRODUCT PROFILE & DIMENIONS
Round bar / rod / disc (diameter): 6.0 to 800 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 800 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Sheet steel via cold rolled: T0.5 ~ 6 X W60 ~ 1000 X L1000 ~ 2000 mm
Steel strip via cold rolled: T0.3 ~ 3 X W10 ~ 200 X L (or in coil form)
Forging piece: stepped shafts, and other different shapes based on OEM.
Forging piece: stepped shafts, and other different shapes based on OEM.
Hot search：25NCD15
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