SAE J2340 550X
SAE J2340 550X
(OP)
Where does one find a simple and free listing of chemical makeup and mechanical properties of some steels? I am specifically seeking SAE J2340 550X.
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RE: SAE J2340 550X
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and also in the original document
SAE J2340
Revision: 99 Chg: Date: 10/00/99
CATEGORIZATION AND PROPERTIES OF DENT RESISTANT, HIGH STRENGTH, AND ULTRA HIGH STRENGTH AUTOMOTIVE SHEET STEEL
http://www.welding-advisers.com/
RE: SAE J2340 550X
RE: SAE J2340 550X
First, the minimum yield strength requirement for grade 550X is 550 MPa, as stated in Table 4 of SAE J2340. I am not sure where you see the number 586.
Second, the reason there is a limited requirement for chemical composition is because this standard was specifically created to define performance criteria (strength, elongation) instead of tightly controlled chemical composition limits. These HSLA grades typically have C contents of ~ 0.06-0.10, Mn of ~ 1.00-1.5, and small additions of V, Nb, or Ti (around 0.05-0.10). All number are in mass percent.
Third, you can find more information from suppliers like US Steel, ISG, AK Steel, etc. Most of the steel suppliers reference ASTM standards like A 1011, but the products are essentially the same.
RE: SAE J2340 550X