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Code
X5CrNiCuNb16-4
US standard (AISI)
630
Composition
Alloying components [%]
C: 0 - 0.07
Cr: 15.00 - 17.00
Cu: 3.00 - 5.00
Mn: 0 - 1.50
Mo: 0 - 0.60
Ni: 3.00 - 5.00
P: 0 - 0.04
S: 0 - 0.015 (0.030*)
Si: 0 - 0.70
Nb: 5 x C - 0.45
Remainder: Fe
Stainless steel grade
C3
Density [g/cm³]
7.8
Nickel migration
[µg/(cm² x week)] in artificial perspiration (pH 4.5)
<0.05
Yield point
Rp0.2 [N/mm²]
≥1000
Tensile strength
Rm [N/mm²]
≥1270
Corrosion resistance
- Good
- Resistant to all natural environmental conditions and quiet seawater
Machinability
Medium - poor
Weldability
Good
Other properties
- Martensitic ferromagnetic structure that is particularly strong after precipitation hardening
- Cannot be mechanically polished with satisfactory results
- Suitability for electropolishing: medium
- For use in the temperature range -50 - 450°C
Main uses
1.4542 is used when high levels of strength are required in combination with good corrosion resistance:
- Bolts/screws
- Spindles, axles
- Hub plates
- Shipbuilding equipment
- Offshore equipment
- Aerospace
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