International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 1.4430 | ~316LSi | Delivery from the stock, in stock |
Technical characteristics
Stainless low carbon chrome-Nickel steel of austenitic class. The alloys of this series are characterized by high resistance to rupture under load and demonstrate improved high temperature strength. The alloy is alloyed with molybdenum, manganese, silicon.
Percentage composition EN 10095−1999
| Fe | C | Si | Mn | Ni | Cr | Mo | S | P | Impurities |
|---|---|---|---|---|---|---|---|---|---|
| basis | ≤ 0,03 | 0.65−1 | 1 — 2,5 | 11 — 14 | 18 — 20 | 2−3 | ≤ 0.03 | ≤0.03 | ≤ 0,2 |
sin the Limit of short-term strength of 550 MPa
sT — yield stress for permanent deformation 300 MPa
d5 — elongation at break.39%
Physical properties
| Property | Value |
|---|---|
| Density: lbs /cm3 | 0,29 |
| Hardness: HB30 Rockwell Hardness Number max. | <=215 B90 - 316L -(ASTM A249) |
| magnetizable | no |
| resistant to intercrystalline corrosion | yes |
| Temperature T °C/F (°C/F) | Specific heat J / kgK (Btu / lb °F) | Thermal conductivity W/mK (Btu·in / ft2·h·°F) | Electric resistance µΩ · cm (Ω circ mill / ft) | Modulus of elasticity kN/mm2 (103 ksi) | Expansion rate from 70°F bis T 10-6 / K (10-6 / °F) |
|---|---|---|---|---|---|
| 20 / 68 | 500 | 14,0 (8) | 0,75 | 200 (29,0) | |
| 100 /212 | 14,6 (9) | 194 (28,1) | 16,0 (9,2) | ||
| 200 /392 | 17,0 (10) | 186 (27,9) | 16,5 (9,5) | ||
| 300 /572 | 18,0 (11) | 179 (25,9) | 17,0 (9,7) | ||
| 400 /752 | 20,0 (13) | 171 (24,8) | 17,5 (10,0) | ||
| 500 /932 | 21,0 (13) | 164 (23,8) | 19,0 (10,2) |
Specifications
AWS 5.9
ASME SFA 5.9
AWS ER 316LSi
UNS S31688
Application
Manufacturer of valves and parts of high strength. Welding low carbon molybdenum austenitic alloys. Higher silicon content improves arc stability, welding bead becomes more smooth. Maximum performance can be realized by MIG welding.
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