GERMAN STEEL St52 = What American steel grade?
The "52" means a minimum tensile strength of 52 kg per sq. mm. In SI units, this is 510 MPa. In Imperial units, it's 73,961 (that is, in practice, 74,000 or 75,000) psi. Bill Reynolds [dec.] consultant metallurgist - Ballarat, Victoria, Australia We sadly relate the news that Bill passed away on Jan. 29, 2010.
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equal and unequal angle steel mill