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The material we are seeking is Pearlitic CrMo cast steel to the following specification.# `' h9 A3 t1 }- h* @
7 ]+ B$ A) v9 B8 e( K3 Y3 R. ?1 i9 R%C 0.6 ~ 0.8- R4 L c' x) c/ Z5 x3 S
%Si 0.75 max4 c* j8 F' Y0 R
%P 0.05 max
4 ~; ~+ N3 n$ H7 I8 n' Y1 t%S 0.03 max
. u5 M/ X/ q3 w) I4 |' _%Ni 0.3 max
# j* l% {9 t7 g5 j%Cr 2.0 ~ 2.4% {$ ~# y" Z, [* W7 n
%Mo 0.2 ~ 0.4
" e5 | W" W. ]! J- A8 z%Cu 0.25 max/ P: r( V7 ~1 @5 C
%Al 0.05 max" t/ n9 F+ O# a8 d3 ^8 B6 O
%Fe balance1 Y3 i) H2 O9 L) _
0 v9 F- a1 X0 D8 A7 mCondition is normalised and tempered.% }, t( o" W- V/ M! H
Hardness range is 33~42 HRC with the target 37 HRC./ T- [/ `: a4 c
, C$ O) k" @$ e8 p! @* p V
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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