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SAE J404 4118 / SAE 4118 Steel - Specifications & Listings

SAE J404 4118: Low carbon chromium-molybdenum case hardening steel with good hardenability and core toughness. Used for gears, camshafts, pins and lightly stressed automotive components.

Forms: Round Bar Category: Alloy Steel
Grade Details
GradeSAE J404 4118 / SAE 4118
StandardSAE J404
DescriptionLow carbon chromium-molybdenum case hardening steel with good hardenability and core toughness. Used for gears, camshafts, pins and lightly stressed automotive components.
ApplicationsGears, camshafts, pins and lightly stressed automotive components
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Round Bar →
Demand outpacing supply
Chemical Composition (%)
C Mn Si P S Cr Mo
0.18-0.23 0.70-0.90 0.15-0.35 <=0.035 <=0.040 0.40-0.60 0.08-0.15
Mechanical Properties
tensile_strength 540-690 MPa
yield_strength 340 MPa min
elongation 17% min
hardness 156-201 HB
Processing:

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SAE J404 4118 / SAE 4118 Round Bar
9.700 MT
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SAE J404 4118 / SAE 4118 Round Bar
3.800 MT
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