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Heat-resisting steel

DIN
ASTM
JIS
GB
Factory hardness
Feature
The main purpose
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SUH1
4Cr9Si2
Annealed≤HB269或
PrehardenedHRC26-32
High temperature esistance, high temperature oxidation corrosion; good toughness, workability and weldability
For the internal combustion engine intake valves, light-load engine exhaust valve
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SUH3
4Cr10Si2Mo
Annealed≤HB255或
PrehardenedHRC26-32
High temperature esistance, high temperature oxidation corrosion; good toughness, workability and weldability
For the internal combustion engine intake valves, light-load engine exhaust valve