1095 Steel
SAE 1095 is a high-carbon spring steel offering the highest carbon content of the standard 10xx series. It is known for its exceptional hardness, wear resistance, and edge retention after heat treatment. This grade is designed for applications requiring maximum strength and resilience, such as springs, blades, and cutting tools where high fatigue life and toughness are essential.
grades designations
SAE 1095 is a plain carbon spring steel produced to a defined chemical composition and mechanical properties. It contains approximately 0.90–1.03 % carbon and 0.30–0.50 % manganese, with trace levels of phosphorus and sulfur. The high carbon content enables full hardenability and excellent strength through heat treatment, while maintaining enough ductility for spring performance when properly tempered.
SAE 1095 Specifications
Property
specification
Weldability
Due to its high carbon level, 1095 has very limited weldability. The risk of cracking and brittleness in the heat-affected zone is high. Welding should be avoided if possible.
Ease of Fabrication
Machining and forming are best conducted in the annealed condition, as hardness and strength increase substantially after heat treatment.
Thermal Cutting
1095 is prone to edge hardening when cut by thermal methods such as laser or plasma.
Bendability
1095 offers minimal bendability in the hardened condition and limited ductility even when normalized. Forming operations should be performed only in the annealed state, before heat treatment.
Hardness
In the fully hardened and tempered condition, SAE 1095 steel can reach Rockwell C hardness values of 60–66 HRC, depending on section size, quench medium, and tempering temperature.
