20NCD7
2015-11-01 08:26:36 Origin： Remark：0 Click：
Technical specification of French standards bearing steel 20NCD7 data sheet, 20NCD7 Chemical compositions, 20NCD7 mechanical properties from Steelmaking, ESR melted, Blooming,20NCD7 Forging, Hot rolling, Heat treatment, Straightening, Ultrasonic test, Cold working or Machined. We also possess the advanced precision machining equipments for further processing. Please just let us know what you inquire. Technical specification - NF A35-565.
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL DATASHEET - NF 20NCD7
MATERIAL TYPE: Bearing steel
MATERIAL STANDARDS: NF A35-565
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.17 ~ 0.22
Si (％): 0.15 ~ 0.35
Si (％): 0.15 ~ 0.35
Mn (％): 0.45 ~ 0.65
P (％)≤: 0.025
S (％)≤: 0.015
P (％)≤: 0.025
S (％)≤: 0.015
Cr (%): 0.40 ~ 0.60
Mo (%): 0.20 ~ 0.30
Ni (%): 1.65 ~ 2.00
Other(％): Cu ≤ 0.30, Al ≤0.050
Other(％): Cu ≤ 0.30, Al ≤0.050
MECHANICAL PROPERTY
Tensile strength σb≥/MPa: 980
Yield strength σs≥/MPa: 685
Elongation δ5 ≥(%): 8.0
Yield strength σs≥/MPa: 685
Elongation δ5 ≥(%): 8.0
Reduction of area ψ(％) ≥: 35
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 - heat treatment / QT
PRODUCT PROFILE
Round bar / Wire rod (Diameter): 0.50mm to 800mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar / Wire rod (Diameter): 0.50mm to 800mm
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: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W600- 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 with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Sheet steel via cold rolled: T0.5 - 6mm X W600- 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 with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineer. - Email: lh.steel@hotmail.com
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