Stainless Steel - Grade 347 - AISI 347 Fe/Cr18/Ni10/Nb (UNS S34700)
Mar 04, 2026
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Key Properties
The key properties of Stainless Steel-Grade 347 are tabulated below.
Table 1. Key properties
| Electrical Properties | |
|---|---|
| Electrical resistivity ( µOhm.cm ) | 70-73 |
| Mechanical Properties | |
| Elongation at break ( % ) | <60 |
| Hardness - Brinell | 160-190 |
| Izod impact strength ( J.m-1 ) | 20-136 |
| Modulus of elasticity ( GPa ) | 190-210 |
| Tensile strength ( MPa ) | 520-1100 |
| Physical Properties | |
| Density ( g.cm-3 ) | 7.93 |
| Melting point (°C ) | 1400-1425 |
| Thermal Properties | |
| Coefficient of thermal expansion ( x10-6 K-1 ) | 16-18 @ 20-100 °C |
| Maximum use temperature in air ( °C ) | 800 |
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