摘要 |
The invention concerns mould or mould frame parts for plastic material injection moulding made of quenched and tempered martensitic stainless steel consisting, in wt. %, of: 0.02 % = C = 0.09 %, 0.025 % = N = 0.12 % with 0.05 % = C + N = 0.17 %; Si = 0.34 % Al = 0.080 % with Si + 23 Al = 0.20 % and Si + 0.6 Al = 0.25 %; and 0,00025 = AI x N = 0.0020 0;.55 % = Mn = 1 .8 %; 11 .5 % = Cr = 16 % optionally up to 0.48 % of copper, up to 0.90 % of the sum Mo + W/2, up to 0.90 % of nickel, up to 0,090 % of vanadium, up to 0.090 % of niobium, up to 0.025 % of titanium, optionally up to 0.25 of sulphur, the rest being iron and impurities derived from preparation, the composition further satisfying the condition: 6.5 = F = (Cr + Mo) + 2 (Si + V + Nb) - 27 (C + N) - (Ni + Mn/2 + Cu/3) = 13. |
申请人 |
INDUSTEEL CREUSOT;BEGUINOT, JEAN;BOUCHAUD, FREDERIC;PISSELOUP, JEAN |
发明人 |
BEGUINOT, JEAN;BOUCHAUD, FREDERIC;PISSELOUP, JEAN |