30CD4
2015-10-17 09:16:34 Origin： Remark：0 Click：
NF A35-556, A35-558 Specification Fastener Steel 30CD4 Round bar, Flat bar 30CD4 Bolts and nuts, ESR melted, Hot rolling, Heat treatment
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION - Grade 30CD4
MATERIAL TYPE - Fasteners steel
MATERIAL STANDARDS - NF A35-556, A35-558
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.27 ~ 0.33
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
Ferrum, Fe (％): -
Ferrum, Fe (％): -
MECHANICAL PROPERTY UNDER ROOM TEMP.
Size: ≤25mm
Condition: + QT
Tensile strength, Rm MPa: 930
Yield strength Rp0.2 ≥ MPa: 735
Elongation, A5 ≥ (%): 12.0
Yield strength Rp0.2 ≥ MPa: 735
Elongation, A5 ≥ (%): 12.0
Reduction of area ψ(％) ≥: -
PRODUCT DESCRIPTION
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.
PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 650mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Square bar / Flat bar: 3mm 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 W60 - 1200mm X L1000 - 6000mm
Sheet steel via cold rolled: T0.5 - 6mm X W100 - 1000mm X L1000 - 2000mm
Forging piece: stepped shaft, and other different shapes based on OEM.
Sheet steel via cold rolled: T0.5 - 6mm X W100 - 1000mm X L1000 - 2000mm
Forging piece: stepped shaft, and 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, Mechanical gears, gear shaf.t, main axis, valve rods.
Process plant – fasteners, Mechanical gears, gear shaf.t, main axis, valve rods.
Mechanical parts - connecting rod, bolt and nut, Multidiameter shafts.
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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