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1.4034 (R45)

It is stainless martensitic steel. It has very good polishability and hardenability. Can be used in moderately aggressive, chlorine-free environments. It can be welded. It can also be used in tool and mold making.

1.4112 (R17X)

It is a martensitic stainless steel with high hardenability (58 - 60 Rc).

1.4542 (17 – 4 PH)

Increasingly used are marajing steels. It has both high mechanical values like martensitic steels and high corrosion resistance like austenitic steels.

1.4845

1.4845 (X8CrNiSi25-21) is resistant to 30-50oC lower temperatures than SAE 310,1.4841. It is used at high temperatures and where corrosion