G51300

Composition limits are per ASTM A29/A29M-2012 Table 2, and name correspondence is per SAE J404:2009 Table 1; The two standard bases are retained separately. ; Table 2 Note 1: residual Cu≤.35/Ni≤.25/Cr≤.20/Mo≤.06, applicable only to elements not specified as alloying elements.; Specified alloy range takes priority. ; The tabulated range for Si and the buyer-specified option of ≤.10 shall be retained separately; they shall not be forcibly applied simultaneously.. ; The range refers to heat analysis; permissible deviations for finished products shall be governed separately by Table 6.; G43406 is E4340 and cannot be merged as general 4340.

Standard dated 2000-6, Table 1; ladle analysis, mass fraction wt%.; Product analysis deviations shall be verified separately according to SAE J409, and shall not directly expand the table values. Note 1: For elements neither specified nor required in the original table, residual upper limits apply: Cu/Ni/Cr/Mo respectively ≤0.35/0.25/0.20/0.06%; Explicit alloy ranges shall take priority. Pb 0.15–0.35% must be separately specified as L-grade; it is not automatically added to ordinary grades. Al, Ti, Nb, and V must be reported regardless of whether they are specified; Values below 0.008% may be reported as <0.008%; this is a reporting threshold, not a uniform composition upper limit. Grades with E prefix are electric furnace steels, with P/S upper limits of 0.025% respectively, separated from ordinary grades. Applicable to billets, slabs, plate, wire rod and hot-rolled/cold-worked bar products, among other forms.; Chemical composition itself does not guarantee suitability for cold heading.