Alloy SGS-X13

Martensitic stainless steel with high abrasion resistance due to its hardness.
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The SGS-X13 stainless steel alloy is used when good mechanical properties must be combined with relatively moderate corrosion stresses.
Due to its hardness, it is also very resistant to abrasion.


SEVA designation: SGS-X13

Standard designation: (martensitic stainless cast steels)
AFNOR X 30 CR 13 -M (NF A 35-059)
EN GX 30 Cr 13 (NF EN 10283)
DIN 1.4028
AISI 420

Chemical Analysis (in%)

Standardized: (NF EN 10088)

Fe : Bal.
C : 0.25 - 0.35
Cr : 13 - 14
Ni : 0.5 max
Si : 1 max
Mn : 1 max

Mechanical properties

Hardness: 220-270 HB.

Tensile test at room temperature:

Re (MPa) Rp0,2 (MPa) Rm (MPa) A (%)
400 600 800 17

Module de flexion (Young) : 257 GPa


Areas of use

• Food-processing industry
• Hydraulics
• Other industries

Maximum temperature of use


Types of parts produced

• Moulds for the glass industry
• Pumps and valves parts

Standard structure

Martensitic steel.

Physical Properties

Density: 7,5

Thermal expansion coefficient between 20°C and :

100°C 200°C 300°C 400°C
10,5 11 11,5 12

Thermal conductivity at 20°C : 30 W.m-1.K-1

Other properties

Magnetism: Magnetic.


SEVA produces the SGS-X13 alloy in an electric induction furnace.
Cast in a sand mold.
Heat treatment: Normalization and quenching.

Compatible processes

  Compatibilité Remarques
Machining ●●●○○ Cutting speed:
100 - 130 m/min
(using carbide tools, type M).
Polishing ●●●●●  
Welding ●●○○○  
Hot isostatic
pressing (HIP)
Forging ●○○○○  


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Product datasheet
Product picture
Fiche technique SGS-X13
Technical specifications SGS-X13