SNB16

Heat analysis; The large-diameter SNB7 exception does not apply to the two grades in this batch. No edition is stated on the website; Displayed under this source edition; contract applicability is not established

Table 1/3 and Clause 5 of the official Japanese text of JIS G4107:2007; heat-analysis mass percentages. ; Applicable for diameter ≤180mm; For SNB7 diameter >90mm, the C upper limit of 50 may be adopted per Table 3 Note b, as an independent selection. ; SNB5 original text C≥.10% specifies only a lower limit; do not fabricate a carbon upper limit or a complete carbon equivalent upper limit. ; Elements not specified in the table shall not be intentionally added without agreement between both parties, except additions needed to finish steelmaking; A blank must not be assumed to represent zero. ; Product analysis tolerances shall be per JIS G0321 Table 4, not mixed with heat analysis values. ; Alloy-steel bolt materials for high-temperature service, including bars and wire forms; Cold heading processes and actual supply conditions are still to be verified separately and have not been automatically added to the product center.

Q/BQB 517—2023, official original on the Baosteel website, Table 1, row 101; cast-analysis mass fraction wt%. Table footnote a: residual Cr≤0.20, Ni≤0.20, Cu≤0.20, Mo≤0.06 wt%; where this row specifies otherwise, its requirement for that element takes precedence. Unlisted elements and special agreement requirements must not be treated as zero or assumed guarantees; permitted product-analysis deviations are governed separately by GB/T 222. Wire rod is delivered hot rolled; stricter P/S under Z1 and special surface or inclusion quality must be confirmed under normative Annex A and the contractual ordering codes. Fixed mechanical properties must not be inferred from the chemistry table.

Mass fraction wt%; Q/XG 243-2019 heat analysis; Local PDF, page 3. Check product-analysis tolerances under GB/T 222; Heat-analysis ranges are not directly treated as guaranteed product-analysis ranges. The enterprise standard covers passenger-vehicle cold-heading steel wire rod requiring vehicle-manufacturer approval; it does not establish Creation Group stock availability, customer approval or substitution approval. Clause 5.4: where a higher or enhanced cold-upsetting level is required, C≥0.30% specimens must first be spheroidize-annealed.