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1.4125 stainless steel

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Martensitic stainless steel with extremely high hardening capability (1.4125)

Code

X10CrMo17

US standard (AISI)

440C

Composition

Alloying components [%]

C: 0.95 - 1.20

Cr: 16.00 - 18.00

Mn: 0 - 1.00

Mo: 0.40 - 0.80

P: 0 - 0.04

S: 0 - 0.015 (0.030*)

Si: 0 - 1.00

Remainder: Fe

Stainless steel grade

C3

Density [g/cm³]

7.7

Yield point

Rp0.2 [N/mm²]

≥600

Tensile strength

Rm [N/mm²]

≤850

Corrosion resistance

- Medium

- Resistant to freshwater and water vapour as well as mildly aggressive cleaning agents

Machinability

Poor

Weldability

Not suitable

Other properties

- Nickel-free martensitic ferromagnetic structure

- Special steel with very high resistance to wear

- Temperable to 61 HRC (Rm: >2000 N/mm²)

- Can be mechanically polished to a brilliant sheen

- Suitability for electropolishing: medium

Main uses

Predominantly used for equipment and parts that are subject to heavy wear stress and require a high level of hardness:

- Knives

- Surgical cutting tools

- Mould inserts and active elements for plastics processing work involving chemically aggressive moulding compounds

- Shaped and flat knives for processing food and fish

- Corrosion-protected wear parts

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