SAE J2340
SAE J2340 is a hot-rolled steel sheet specification that covers seven grades of steel, including dent resistant, high-strength, and ultra-high strength steels. These grades have properties that are important for advanced designs, such as increased strength and improved crash energy management, but the boost in properties reduces ductility and may require care when forming.
Available Designations
Dent Resistant
High Strength
Ultra High Strength
grades designations
Dent Resistant Non-Bake-Hardenable
- Grade Type A
- Available Strength (MPa): 180, 210, 250, 280
High-Strength Low Alloy
- Grades Type X and Y
- Available Strength (MPa): 300, 340, 380, 420, 490, 550
Dent Resistant Bake-Hardenable
- Grade Type B
- Available Strength (MPa): 180, 210, 250, 280
High-Strength Low Alloy Annealed
- Grade Type R
- Available Strength: 490, 550, 700, 830
High-Strength Solution Strengthened
- Grade Type S
- Available Strength (MPa): 300, 340
Ultra High Strength Dual Phase
- Grades Type DH and DL
- Available Strength: 500, 600, 700, 800, 950, 1000
SAE J2340 Characteristics
Property
specification
Weldability
SAE J2340 exhibits excellent weldability.
Formability
SAE J2340 steels maintain high strength while retaining good formability.
Thermal Cutting
SAE J2340 steels can be laser or plasma cut effectively, but may require controlled cutting parameters to minimize heat-affected zone (HAZ) hardening.
Bendability
These steels maintain predictable bending behavior.
Ease of Fabrication
SAE J2340 steels are optimized for stamping and roll forming processing.
