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{"title":"ASTM A29\/A29m Hot Rolled Alloy Steel Round Bars SAE4340 10-350mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/bb\/a1\/eb9afbd48509c13f9c6fa7b71d79-200x200-1\/astm_a29_2fa29m_hot_rolled_alloy_steel_round_bars_sae4340_10_350mm.jpg","attrs":{"Brand Name":"DELTA","Model Number":"SAE4340","Certification":"ISO","Place of Origin":"China"}}
{"title":"25Cr2MoVA Alloy Steel Round Bar Diameter 10 - 300mm Custom Cutting in Length","imgUrl":"https:\/\/img.chinax.com\/nimg\/b7\/8f\/c374af89362ac900e00ce51f86b6-200x200-1\/25cr2mova_alloy_steel_round_bar_diameter_10_300mm_custom_cutting_in_length.jpg","attrs":{"Brand Name":"DELTA","Model Number":"DIN 1.8159 (25CrMoV6-4) \/ 25Cr2MoVA","Certification":"ISO","Place of Origin":"China"}}
{"title":"EN DIN Standard 41CrAlMo7 Alloy Steel Round Bar Diameter 10 - 350mm SCM645 Alloy","imgUrl":"https:\/\/img.chinax.com\/nimg\/86\/8a\/f384d75ceea894a15b4f1ea6423b-200x200-1\/en_din_standard_41cralmo7_alloy_steel_round_bar_diameter_10_350mm_scm645_alloy.jpg","attrs":{"Brand Name":"DELTA","Model Number":"41CrAliMo7","Certification":"ISO","Place of Origin":"China"}}
{"title":"25Cr2MoVA \/ DIN1.8159 Alloy Steel Round Bar Hot Rolled Diameter 20 - 350mm in 6m","imgUrl":"https:\/\/img.chinax.com\/nimg\/55\/19\/5e678c170e39068beeabe330b547-200x200-1\/25cr2mova_2f_din1_8159_alloy_steel_round_bar_hot_rolled_diameter_20_350mm_in_6m_length.jpg","attrs":{"Brand Name":"DELTA","Model Number":"DIN 1.8159 (25CrMoV6-4) \/ 25Cr2MoVA","Certification":"ISO","Place of Origin":"China"}}
{"title":"EN 1.8507 (34CrAlMo5-10) Nitriding Steel Round Bar Diameter 10 - 300mm Custom","imgUrl":"https:\/\/img.chinax.com\/nimg\/25\/c9\/4f41b121bc96fda3bc795edf2de2-200x200-1\/en_1_8507_2834cralmo5_10_29_nitriding_steel_round_bar_diameter_10_300mm_custom_cutting.jpg","attrs":{"Brand Name":"DELTA","Model Number":"34CrAlMo5-10 \/ 1.8507","Certification":"ISO","Place of Origin":"China"}}
GCr15 / SAE52100 / EN31 Alloy Steel Round Bar for Bearing Applications
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 excellent performance and minimal alloy content
High hardenability and comprehensive mechanical properties
Excellent machinability after spheroidizing annealing
High hardness, uniform structure, superior wear resistance, and high contact fatigue performance after quenching and tempering
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
Heating Temperature (°C)
Cooling
Hardness (HRC)
Heating 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 applications, tractors, machine tools, rolling mills, boring machines, mining machinery, and general machinery
High load and high speed rotating mechanical transmission bearings
Tool manufacturing including punching dies and measuring instruments
Available Stock Sizes
Product Form
Dimension
Size Range
Length
Round Bar
Diameter
16-280mm
4000-10000mm
Flat Steel
Thickness
8-200mm
3000-4000mm
Quality Assurance & Service Commitment
Government-Owned Steel Mill Quality
We source materials exclusively from certified steel manufacturers to ensure consistent quality and reliability in all our steel products.
Fast and Reliable Delivery
We prioritize timely delivery for all orders, whether raw materials or finished products with machining or heat treatment, ensuring shortest possible lead times.
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.
Our Comprehensive Services
We supply quality specialty steel for all industrial applications with orders of any size or length. Our services include metal cutting, sizing, machining (blanking, milling, grinding), heat treatment, sawing for small or large quantities, and excellent customer support.
Contact Us Today!
Get the latest pricing and detailed product information
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
