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GCr15 Round Bar Bearing Steel Bar with Polished Surface High Hardenability and OD 6-630mm

Minimum Order Quantity	1 Ton
Price	US $730-1,350 / Ton

Product Details

Model Number	GCr15	Surface Treatment	Polished
Alloy Type	Alloy	Diameter Range	6-630mm
Carbon Content	0.95-1.05%	Silicon Content	0.15-0.35%
Manganese Content	0.2-0.4%	Phosphorus Content	≤0.027%
Sulfur Content	≤0.02%	Chromium Content	1.3-1.65%
Quenching Temperature	830-850°C	Quenching Hardness	62-65 HRC
Tempering Temperature	150-190°C	Tempering Hardness	58-62 HRC
Round Bar Length	4000-10000mm
Highlight	Polished Surface GCr15 Round Bar , High Hardenability Bearing Steel Bar , OD 6-630mm Alloy Steel Round Bar

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Product Description

GCr15 Round Bar - High Carbon Chromium Bearing Steel

GCr15/SAE52100/EN31 alloy steel round bar is a premium bearing steel with excellent mechanical properties and wear resistance for demanding industrial applications.

Product Overview

GCr15 is a high carbon chromium bearing steel with optimized alloy content. After quenching and low temperature tempering, it delivers high hardness, uniform microstructure, superior wear resistance, and exceptional contact fatigue performance.

Key Features

Widely used high carbon chromium bearing steel with excellent performance and cost-effectiveness
High hardenability and comprehensive mechanical properties
Excellent machinability after spheroidizing annealing process
High hardness, uniform structure, superior wear resistance, and high contact fatigue performance after heat treatment
Superior hot working performance for manufacturing flexibility

International Standards Equivalents

Chinese	American	German	Japanese
GB GCr15	AISI SAE52100	DIN 100Cr6/EN31	JIS SUJ2

Chemical Composition (%)

Grades	C	Si	Mn	P	S	Cr	Mo	Cu	Ni
GCr15/52100	0.95-1.05	0.15-0.35	0.2-0.4	≤0.027	≤0.02	1.3-1.65	≤0.1	≤0.25	≤0.3
100Cr6	0.95-1.05	0.15-0.35	0.25-0.45	≤0.025	≤0.025	1.4-1.65	≤0.08	≤0.25	≤0.3

Heat Treatment Specifications

Quenching			Tempering
Heating Temperature/ºC	Cooling	Hardness/HRC	Heating Temperature/ºC	Cooling	Hardness/HRC
830-850	Oil	62-65	150-190	Air	58-62

Typical Applications

Manufacturing bearing rings and rolling elements for internal combustion engines, electric motors, automotive systems, tractors, and industrial machinery
Production of rolling mill bearings, boring machine components, mining equipment, and general machinery applications
High load and high speed rotating mechanical transmission bearings
Tool manufacturing including punching dies and precision measuring instruments

Available Stock Sizes

Product Form	Dimension	Size Range
Round Bar	Diameter	16-280mm
Round Bar	Length	4000-10000mm
Flat Steel	Thickness	8-200mm
Flat Steel	Length	3000-4000mm

Why Choose Our GCr15 Bearing Steel?

Quality Assurance from Government-Owned Steel Mills

We meticulously source materials exclusively from certified steel manufacturers to ensure consistent quality and reliability in every steel product we supply. Our two decades of industry experience demonstrate our commitment to delivering both superior quality and competitive pricing.

Speedy and Timely Delivery

We prioritize every business transaction and ensure prompt delivery of both raw materials and finished products with machining or heat treatment services. Your purchase orders are processed efficiently for the shortest possible lead times.

Quality Commitment

Our ISO 9001 certified quality management system undergoes continuous improvement and regular audits to maintain the highest standards. We are committed to delivering competitive products that meet our customers' demanding quality requirements.

Our Comprehensive Services

We provide quality specialty steel for all industrial sectors with flexible order quantities and fast shipping. Our unique inventory of specialty steels is complemented by value-added services including metal cutting, sizing, machining (blanking, milling, grinding), heat treatment, and precision sawing for both small and large quantities.