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GCr15 Alloy Bearing Steel Round Bar with Polished Surface OD 6-630mm for Mold Steel Application

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

Product Details

Model NO.	GCr15	Surface Treatment	Polished
Alloy Type	Alloy	Diameter Range	OD 6-630mm
Production Capacity	500tons	Carbon Content	0.95-1.05%
Silicon Content	0.15-0.35%	Manganese Content	0.2-0.4%
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 Diameter	16-280mm
Round Bar Length	4000-10000mm
Highlight	Polished Surface GCr15 Steel Round Bar , OD 6-630mm Alloy Bearing Steel Round Bar , Mold Steel Application Tool Steel Round Bar

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Product Description

GCr15 / SAE52100 / EN31 Alloy Bearing Steel Forged Round Bars

High carbon chromium bearing steel round bars specifically designed for forming tools, hand taps, and bearing applications.

Product Introduction

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

Key Features

Widely used high carbon chromium bearing steel with optimal performance and minimal alloy content
Excellent hardenability and comprehensive mechanical properties
Superior machinability following spheroidizing annealing
High hardness, uniform structure, exceptional wear resistance, and high contact fatigue performance after heat treatment
Outstanding hot working performance

International Standards Equivalents

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

Chemical Composition (%)

Grade	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 Parameters

Quenching			Tempering
Temperature (°C)	Cooling	Hardness (HRC)	Temperature (°C)	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, machine tools, rolling mills, boring machines, mining equipment, and general machinery
Production of high-load, high-speed rotating mechanical transmission bearings
Fabrication of precision tools including punching dies and measuring instruments

Available Stock Sizes

Product Form	Dimension	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 Steel Products?

Premium Quality Assurance

We source materials exclusively from government-owned steel mills to ensure consistent, high-quality steel products. Our two decades of industry experience demonstrate our commitment to delivering both superior quality and competitive pricing.

Reliable and Timely Delivery

We prioritize every order, ensuring prompt delivery whether you require raw materials or finished products with machining or heat treatment services.

ISO 9001 Certified Quality Management

Our integrated quality management system is continuously improved and certified according to ISO 9001 standards, with regular audits and recertification to maintain excellence.

Comprehensive Service Offering

We provide specialty steel solutions for all industrial applications with the following value-added services:

Quality special steel for diverse industries
Flexible order sizes with fast shipping
Unique inventory of specialty steel products
Value-added services: metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment
Sawing services for small or large quantities, including sawing-to-size
Exceptional customer service and technical support