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The material we are seeking is Pearlitic CrMo cast steel to the following specification.
" d/ h1 P/ m( J6 I
) w4 Y; s1 z4 H' o6 G%C 0.6 ~ 0.85 A% S6 m! X3 o& ~5 A! I0 p: L! C
%Si 0.75 max" g9 Y- |3 f* i" X
%P 0.05 max
) D# s* `2 G3 K5 o, l8 ^3 j+ i%S 0.03 max
" J1 A# x: e! D8 L' J! ~# k%Ni 0.3 max+ ] e5 y% a) O5 ^( T
%Cr 2.0 ~ 2.46 N& _7 ]9 H0 ^. D# g
%Mo 0.2 ~ 0.4$ K, S+ c7 b& \! a
%Cu 0.25 max
$ }! A; R) J+ [; P%Al 0.05 max5 z5 V, C3 N' g. }4 k, q
%Fe balance
4 F" T! d8 h& P: S& f8 H2 ~- M, z0 O8 J. l5 j1 ~
Condition is normalised and tempered.2 \5 e ^% P# I6 Q) t
Hardness range is 33~42 HRC with the target 37 HRC.
Z5 f4 c7 |- t6 o
( Z3 S/ u' v4 b! C4 ~Castings will be generally in the 15 to 35kg range. Production will need to be by some form of no-bake hard sand moulding. |
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发表于 2015-2-25 21:25:22
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