25CD4
2015-10-10 19:45:12 Origin： Remark：0 Click：
NF A35-558 Specifications 25CD4, a low alloy structure steel 0.25C - 1.0Cr - 0.20Mo, 25CD4 Round bar, flat bar, forgings ESR melted, Hot forging/rolling, Heat treat, Ultrasonic test, Cold working.
MATERIAL TECHNICAL DATASHEET - Grade 25CD4
MATERIAL STANDARDS - NF A35-558
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS
INVENTORY STOCK - bright round bar diameter 25mm
HS Code For Customs - 72283000 / 72284000
MATERIAL CATEGORY - Low alloy structural steel
MATERIAL CATEGORY - Low alloy structural steel
MAIN CHEMICAL COMPOSITION (mass weight %)
Carbon, C (％): 0.23 ~ 0.29
Silicon, Si (％): 0.10 ~ 0.40
Silicon, Si (％): 0.10 ~ 0.40
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％)≤: 0.035
Sulfur, S (％)≤: 0.035
Phosphorus, P (％)≤: 0.035
Sulfur, S (％)≤: 0.035
Chromium, Cr (%): 0.90 ~ 1.20
Nickel, Ni (%): -
Molybdenum, Mo (%): 0.15 ~ 0.25
MECHANICAL PROPERTY UNDER ROOM TEMP.
Condition: quenched and tempered
Size /mm: ≤16
Tensile strength σb≥/MPa: 900 ~ 1100
Yield strength σs≥/MPa: 700
Elongation δ5 ≥(%): 12.0
Yield strength σs≥/MPa: 700
Elongation δ5 ≥(%): 12.0
Reduction of area ψ(％) ≥: 50
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 + IFF + VD 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.
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 rods.
Process plant – fasteners. Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rod, bolt and nut. Multidiameter shafts.
PROFILE & DIMENSIONS
Round bar / Disc (diameter): 5.5 to 450mm
Square bar / Flat bar: 10 to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar / Disc (diameter): 5.5 to 450mm
Square bar / Flat bar: 10 to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200mm X W10 - 1100mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W6 - 100mm 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 W6 - 100mm 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.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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