12NICR3-2

BS EN 10263-3:2017; Heat analysis, mass percent; Values without a stated range are maxima; Notes below the table are retained. No edition is stated on the website; Displayed under this source edition; contract applicability is not established

ISO 4954:2018; heat analysis, mass fraction %; values without a stated range are upper limits; see the source page for complete table footnotes. The website does not specify the edition; the source edition is shown here and does not establish contractual applicability.

ISO 4954:2018, Table B.2 gives heat analysis; A single value is a maximum; a dash is not zero. ; Product-analysis tolerances are listed separately under Table 2/3 of the standard and do not directly widen the heat-analysis composition ranges. ; Optional Al0.020–0.050% to improve cold-heading performance; this is not a universal mandatory minimum. ; Low Si may be agreed in the order, taking hardenability into account; Where hardenability is required, the standard permits limited deviations, except for P/S; C must not exceed 0.01%; see Table 2 for the other requirements.

Heat analysis mass fraction wt%; Allowable deviations for product analysis shall follow Table 4; this table shall not be expanded unconditionally.. ; Si may be agreed at a lower content or a specific range at the time of ordering; the default in this table is ≤0.30%.. ; To improve cold-heading performance, Al 0.020–0.050% may be optionally added (Note 3); Al is not mandatory for all grades. ; Small deviations for hardenability orders must satisfy Note 2 and Table 4.; P/S shall not be relaxed by this means; the default composition table shall not be automatically expanded.. ; Elements not listed shall not be intentionally added without the purchaser's consent (except additions needed to finish steelmaking); unspecified does not represent zero.. ; This standard is for cold-heading and cold-extrusion, but specific product supply still requires confirmation of dimensions, delivery condition, surface, and performance requirements..

Original DIN EN10263-3 Februar2002 expressly adopts EN10263-3:2001; Composition follows PDF8, Table 2; 2017 is not applied across editions. ; Heat analysis wt%; Si≤.30; a lower content or specified range may be agreed at ordering, but no option is selected without an agreement. ; Note b: hardenability-based orders permit only small deviations, C .01 and the other elements in Table 3; P/S is not applicable; Default limits are not widened; product-analysis tolerances require separate verification. ; Note a: unlisted elements must not be intentionally added except to finish the heat; Residual elements must not impair mechanical properties or end use; unspecified values are not entered as zero. ; The historical table has no general optional Al range under 2017, note 3; the Al option from a later edition is not copied. ; This part covers carburizing steels for cold heading/cold extrusion; dimensions, delivery condition, surface and actual supply still require confirmation.

DIN EN 10263-3:2018-02 is the German-language edition of EN 10263-3:2017; Verified according to the heat analysis and notes of Table 3 in the German official version.. ; Table 3 of DIN EN 10263-3:2018-02 specifies the heat analysis mass fraction in wt%.; Allowable deviations for product analysis shall follow Table 4; this table shall not be expanded unconditionally.. ; Si may be agreed at a lower content or a specific range at the time of ordering; the default in this table is ≤0.30%.. ; To improve cold-heading performance, Note 3 of Table 3 allows the optional addition of Al 0.020–0.050%.; This composition variant shall be applied only when explicitly selected.. ; Small deviations for hardenability orders must satisfy Note 2 and Table 4.; P/S shall not be relaxed by this means; the default composition table shall not be automatically expanded.. ; Elements not listed shall not be intentionally added without the purchaser's consent (except additions needed to finish steelmaking); unspecified does not represent zero.. ; This standard is for cold-heading and cold-extrusion, but specific product supply still requires confirmation of dimensions, delivery condition, surface, and performance requirements..