Alloy SGS-X13
Descriptions
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.
Designations
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
Applications
Areas of use
• Food-processing industry
• Hydraulics
• Other industries
Maximum temperature of use
750°C
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.
Production
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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