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The material we are seeking is Pearlitic CrMo cast steel to the following specification.) h! ?- _( u! G2 j
) m6 @3 j* s8 w4 L! M4 j# Y6 I%C 0.6 ~ 0.8- q* K: S# P5 D( S6 O/ W' A* d
%Si 0.75 max
# j# J$ v0 N3 O B6 g$ l6 [%P 0.05 max: |! Y7 ~$ B% \- S, s
%S 0.03 max
. j4 z, ?& t- T' B' x0 q7 Y( B%Ni 0.3 max" g% B7 c- W: }+ R) ~, |7 s; k
%Cr 2.0 ~ 2.4
+ Y: M7 T1 I2 k: ]3 A/ J6 D( ?%Mo 0.2 ~ 0.4/ k3 ~% S$ v F. L" l" f/ e+ i
%Cu 0.25 max- Q+ Z( b9 t+ q* B
%Al 0.05 max! u- ~, c& K& T5 A- ~* x
%Fe balance
* h" P3 g. r7 r% b: {: ^% `# L! [
- L: t! W, p W% P+ H9 C2 E3 vCondition is normalised and tempered.. H: Z K+ D F) I# Z
Hardness range is 33~42 HRC with the target 37 HRC.
7 K3 q, _/ s+ `! A
9 {' i& f+ K8 aCastings 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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