20NiCrMo7 / B29
2016-01-05 13:54:41 Origin： Remark：0 Click：
Technical specifications ISO standards case hardening bearing steel ISO 20NiCrMo7 datasheet,ISO 20NiCrMo7 Chemical compositions, GRADE 20NiCrMo7 mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working or rough turned machining. Technical specification - ISO 683/17. We also possess the advanced precision machining equipments for catering for your different special requirements.
TECHNICAL SPECIFICATIONS - 20NiCrMo7 & B29
Official Test Certificate Report: issued by TUV - SGS - BV
MATERIAL TYPE: Case hardening bearing steel
MATERIAL STANDARDS: ISO 683/17
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.17 ~ 0.23
Si (％): ≤ 0.40
Mn (％): 0.40 ~ 0.70
P (％)≤: 0.025
S (％)≤: 0.015
Cr (%): 0.35 ~ 0.65
MATERIAL STANDARDS: ISO 683/17
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.17 ~ 0.23
Si (％): ≤ 0.40
Mn (％): 0.40 ~ 0.70
P (％)≤: 0.025
S (％)≤: 0.015
Cr (%): 0.35 ~ 0.65
Mo (%): 0.20 ~ 0.30
Ni (%): 1.60 ~ 2.00
Other (%): Cu ≤ 0.30, Al ≤ 0.050, O 0.020
MECHANICAL PROPERTIES
MECHANICAL PROPERTIES
Condition: + A = annealing
Hardness /≤HBW: 229
Hardness /≤HBW: 229
Condition: + AC = Spheroidizing annealing
Hardness /≤HBW: 170
Hardness /≤HBW: 170
CLASSIFICATION AND APPLICATION
Bearing steel is a type of steel used in the field of fabricating the ball, pin roller, sleeve for antifriction bearing. and also measuring implements, cold-punching die, lead screw and precision components of diesel engine oil pump. Bearing steel is divided into high-carbon chromium bearing steel, carburizing bearing steel, stainless bearing steel, high temperature bearing steel, medium-carbon bearing steel.
Generally, condition of delivery is hot rolled+annealing, cold drawn+annealing.
PRODUCT DESCRIPTION
The alloy is usually produced by LF /EAF /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 levels according to the buyers' requirements.
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.
Heavy/middle plate via hot rolled: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Bearing steel is a type of steel used in the field of fabricating the ball, pin roller, sleeve for antifriction bearing. and also measuring implements, cold-punching die, lead screw and precision components of diesel engine oil pump. Bearing steel is divided into high-carbon chromium bearing steel, carburizing bearing steel, stainless bearing steel, high temperature bearing steel, medium-carbon bearing steel.
Generally, condition of delivery is hot rolled+annealing, cold drawn+annealing.
PRODUCT DESCRIPTION
The alloy is usually produced by LF /EAF /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 levels according to the buyers' requirements.
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.
Heavy/middle plate via hot rolled: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineer. E-mail: lh.steel@hotmail.com
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