100CrMo7 Alloy Tool Steel Bar Plate High Hardness Wear Resistance Oil Quenched

• Customization: Available
• Type: Sheet
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: 100CrMo7
• Composition: Check Detailed Description
• Technique: Forged
• Shape: Block
• Surface Treatment: Black, Machined
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: tool steel
• Quality Inspection: Ut, Chemical Composition, Physical Properties/SGS
• Non-Metallic Inclusiton: ASTM E45
• Grain Size: ASTM E112
• Heat Treatment: Annealed/Normalized/Q+T
• Transport Package: Wooden Case
• Specification: check detailed description
• Trademark: Ningbo Ningshing
• Origin: China

Product Description

Product Description

100Cr6 High Carbon Chrome Steel - Precision Engineered for Demanding Applications

100CrMo7 is a premium chromium-alloyed bearing steel engineered for high fatigue resistance and exceptional wear performance in demanding rotational applications. With optimized carbon (0.90-1.05%) and chromium (1.60-1.90%) content, it achieves uniform hardness (60-64 HRC) after heat treatment while maintaining microstructural cleanliness for extended service life.
 
Ideal for rolling elements, bearing races, precision shafts, and high-stress mechanical components. Available in annealed or hardened condition with full MTC 3.1 certification. Supported by global logistics and technical service.

√ Superior Wear Resistance
 
√ Excellent Hardness-Toughness Balance
 
√ Global Standard Compliance
 
√ OEM & Customization Support
 
√ Stock Ready for Fast Delivery

Product parameters

100CrMo7 Chemical Composition(%)
C	Si	Mn	P	S	Cr	Ni	Cu	Mo
0.90-1.05	0.20-0.40	0.25-0.45	≤0.03	≤0.025	1.65-1.95	≤0.30	≤0.30	0.15-0.25

100CrMo7 Mechanical Properties
Properties		Conditions
		T (°C)	Treatment
Density (x1000 kg/m³)	7.7-8.03	25
Poisson's Ratio	0.27-0.30	25
Elastic Modulus (GPa)	190-210	25
Tensile Strength (Mpa)	1158	25	oil quenched, fine grained, tempered at 425°C
Yield Strength (Mpa)	1034
Elongation (%)	15
Reduction in Area (%)	53
Hardness (HB)	335	25	oil quenched, fine grained, tempered at 425°C

100CrMo7 Physical Properties
Quantity	Value	Unit
Thermal expansion	16-17	e-6/K
Thermal conductivity	16-16	W/m.K
Specific heat	500-500	J/kg.K
Melting temperature	1370-1400	°C
Service temperature	0-500	°C
Density	8000-8000	kg/m³
Resistivity	0.7-0.7	Ohm.mm²/m

Characteristics

1. High Fatigue & Wear Resistance

Optimized for rolling contact applications with exceptional durability under cyclic loading.

2. Uniform High Hardness (60-64 HRC)

Achieves consistent hardness distribution through controlled heat treatment.

3. Excellent Dimensional Stability

Maintains precision with minimal distortion during processing and service.

4. Enhanced Microstructural Cleanliness

Strict inclusion control ensures reliability in critical applications.

5. Elevated Temperature Performance

Retains mechanical properties in demanding environments up to 120°C.

Application

(1) Precision Bearing Systems 
Widely used in automotive wheel bearings, industrial gearbox bearings, and aerospace guidance system bearings due to its high fatigue resistance and uniform hardness. 
 
(2) High-Stress Transmission Components
Ideal for heavy-duty machinery gears, drive shafts, and hydraulic system components requiring exceptional wear resistance and dimensional stability. 
 
(3) Petrochemical Equipment
Employed in oil/gas transmission pipeline valves, high-pressure pump components, and drilling equipment parts resistant to abrasive and corrosive environments. 
 
(4) Aerospace Critical Parts
Essential for aircraft engine components, landing gear bearings, and flight control system parts demanding ultra-high reliability under extreme conditions. 
 
(5) Precision Measuring Instruments
Used in gauge blocks, calibration tools, and metrology equipment where dimensional stability and wear resistance are critical for measurement accuracy. 

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