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The material we are seeking is Pearlitic CrMo cast steel to the following specification.
g8 c4 v/ ?# P3 h; E! f. m8 e# z) i* X6 S
%C 0.6 ~ 0.8) L# | b1 A" g7 M9 g
%Si 0.75 max) Z( s# ~5 r, }8 |& Z
%P 0.05 max# ?% E# p6 \/ \3 E& ~ C
%S 0.03 max2 u$ r; f8 L5 w* D; d# d! u
%Ni 0.3 max. ]( j' G: l% ?3 s" {
%Cr 2.0 ~ 2.4& u& t+ q! a) n7 u
%Mo 0.2 ~ 0.4
8 G0 @- z H% u: V* s( [$ R%Cu 0.25 max
, E7 n. i" y' L%Al 0.05 max
: h! Z |5 T( t%Fe balance$ y/ `3 `1 j% p7 Y0 `2 `+ s
) ~9 B% `$ e0 I, O$ H+ h JCondition is normalised and tempered.7 W" B" n( ~- E
Hardness range is 33~42 HRC with the target 37 HRC.4 l$ X+ L" p% h4 a; r
; w5 y, O3 e( i dCastings 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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