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The material we are seeking is Pearlitic CrMo cast steel to the following specification.1 m2 Z% K+ `) E7 c" ]
1 @9 b5 e' ~7 k# @4 S) G$ E%C 0.6 ~ 0.8- ], n0 X4 N2 H6 Y) \6 A! ~4 x
%Si 0.75 max
( K% [& J# Z0 T! W8 F%P 0.05 max3 A9 Y- V) C+ ~+ N7 o
%S 0.03 max
* p7 X& L3 G6 x%Ni 0.3 max$ E, Y: a# u6 w( `& {
%Cr 2.0 ~ 2.49 E7 G( H& q9 p3 ~
%Mo 0.2 ~ 0.4
9 N1 r2 O( O& A8 }. N9 u0 h%Cu 0.25 max
3 }$ T2 c* c/ G. `1 T) S%Al 0.05 max% d3 h1 N0 j( W" R
%Fe balance( m0 ?! K. K* |& [5 C1 Z
+ r+ Q; b. t( ?/ nCondition is normalised and tempered.
, R& \6 }1 v* N. E) Z0 lHardness range is 33~42 HRC with the target 37 HRC.
; \+ z+ l! M& j/ k6 b: i/ }
4 c" G3 h. j7 N2 S: 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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