SAE J403 1040 Steel — Specifications & Listings

SAE J403

SAE 1040 is a medium carbon steel offering higher strength and hardness than lower carbon grades. It is suitable for induction hardening and heat treatment.

Category: Carbon Steel
Grade Details
GradeSAE J403 1040
StandardSAE J403
DescriptionSAE 1040 is a medium carbon steel offering higher strength and hardness than lower carbon grades. It is suitable for induction hardening and heat treatment.
ApplicationsUsed for gears, shafts, couplings, bolts, machinery parts, and agricultural equipment.
Chemical Composition (%)
C Mn P S
0.37-0.44 0.60-0.90 0.040 max 0.050 max
Mechanical Properties
tensile_strength 620-760 MPa
yield_strength 370-460 MPa
elongation 15-22%
hardness 170-220 HB

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