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TECHNICAL SPECIFICATION DATASHEET - DIN 100Cr6 (W3) & 1.3505
MATERIAL CATEGORY - Bearing steel
MATERIAL SPECIFICATIONS - DIN 17230 (1980)
CHEMICAL COMPOSITION ( Mass weight - % )
C (％): 0.93 ~ 1.05
Si (％): 0.15 ~ 0.35
Mn (％): 0.25 ~ 0.45
P (％)≤: 0.025
S (％)≤: 0.015
Cr (％): 1.35 ~ 1.60
DIFFERENT HARDNESS OF BEARING STEEL
Annealed condition ≤HBS: 207
Quenched condition HRC| water quenched: 66
Quenched condition HRC| oil quenched: 65
HOT WORKING AND HEAT TREATMENT
Hot working temperature /℃: 1100～850
Heat treatment temperature /℃|annealed: 780～800
Heat treatment temperature /℃|normalized: 870～900
Heat treatment temperature /℃|quenched: 800～830water,830～870oil
Heat treatment temperature /℃|tempered: 150～170
Higher contact fatigue strength
Superior hardness after heat treatment
Superior abrasive resistance,low friction coefficient
Superior limit of elasticity
Excellent impact toughness and fracture toughness
Excellent dimensional stability
Excellent anti-corrosion performance
Excellent cold,hot-working character
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.
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.
Bars are usually supplied black/bright in the annealed condition.
Final heat treatment - QT treatment
Round bar / Wire rod (Diameter1): 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.
Sheet steel via cold rolled: T0.5 - 6mm X W10- 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.
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