Foshan Nanhai Yuhua Hardware Products Co., Ltd.
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SS316 SS317 Polished Stainless Steel Handrail Accessories AISI
About 440 steels
All 440 steels are hardenable, meaning they gain additional strength via heat treatment, and they are considered a high carbon alloy steel. When strengthened using this process, 440 steels are the hardest of all the stainless steels, making them both abrasion-resistant as well as corrosion-resistant. When in its soft “annealed” state, 440 steel is easily worked, machined, and manipulated into shape, where it can then be hardened and gain the increased strength for which it is known.
Corrosion resistance & temperature effects
While most stainless steels are resistant to rusting, 440 steels are slightly less corrosion resistant. This is the result of its martensitic structure, which increases its hardness but leaves it more open to corrosion than austenitic and ferritic stainless steels. This is not to say that 440 steel rusts easily, as they are more corrosion-resistant than most steels, but understand that it should not be chosen purely
for its rust resilience.
Stainless Steel Handrail Accessories Specification
| Name | SS316 SS317 Polished Stainless Steel Handrail Accessories AISI |
| Items | 316L Stainless Steel pipe |
| Standard | ASTM A554 |
| Material Grade | 316L:Ni10%,Cr16% |
| Outer Diameter | 50mm |
| Thickness | 0.5mm |
| Length | 2m, or as customers' request |
| Tolerance | a) Outer Diameter: +/- 0.2mm |
| b) Thickness: +/- 0.03mm | |
| c) Length: +/- 5mm | |
| Surface | annealing,pickling |
| sandblasting | |
| Application | industry,exhausting,welding,furniture,window |
| Test | Squash test, extended test, water pressure test,heat treatment, NDT |
Stainless Steel Pipe Chemical Component( %)
| Grade ASTM | C | Si | Mn | S | P | Cr | Ni |
| 316 | ≤0.035 | ≤1.00 | 2 | ≤0.03 | ≤0.045 | 16-18 | 10-14 |
| 304 | ≤0.07 | ≤1.00 | ≤2.00 | ≤0.030 | ≤0.035 | 17.00-19.00 | 8.00-11.00 |
