The Analysis of Stainless Steel Material Used for Watch Band Making
Type of Steel | Chemical Composition% | Character | |||||||||
C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Other | ||
SUS 304 | ≦0.08 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.030 | 8.00-10.50 | 18.00-20.00 | -- | -- | -- | Standard (basic) 18-8 stainless steel |
SUS 304L | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.030 | 9.00-13.00 | 18.00-20.00 | -- | -- | -- | Carbon content is decreased from 0.08% (in 304) to 0.03% in order to increase the corrosion-resistance. |
SUS 303 | ≦0.15 | ≦1.00 | ≦2.00 | ≦0.20 | ≧0.150 | 8.00-10.00 | 17.00-19.00 | -- | -- | -- | By adding S to 18-8 stainless steel to be free machining, corrosion-resistance is influenced and the extensibility is desreased. |
SUS 303C | ≦0.15 | ≦1.00 | ≦2.00 | ≦0.20 | ≧0.150 | 8.00-10.00 | 17.00-19.00 | -- | 1.50-3.50 | -- | By adding Cu to 303 to increase free-machining. |
SUS 316 | ≦0.08 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | -- | -- | By adding Mo (2~3%) to 304 to increase corrosion-resistance especially for sulphuric acid. |
SUS 316F | ≦0.08 | ≦1.00 | ≦2.00 | ≦0.045 | ≧0.100 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | -- | -- | By adding S (0.15%) to type 316 to be free machining. |
EN 1.4427 | ≦0.12 | ≦1.00 | ≦2.00 | ≦0.060 | 0.15-0.35 | 10.50-13.50 | 16.50-18.50 | 2.00-2.50 | -- | -- | European (EN) specification of free-machining material 316, equivalent to SUS 316F. |
AISI 316L | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.030 | 10.00-14.00 | 16.00-18.00 | 2.00-3.00 | -- | -- | Carbon content is decreased from 0.08% (in 316) to 0.03% in order to increase the corrosion-resistance. |
SUS 316L | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.030 | 12.00-15.00 | 16.00-18.00 | 2.00-3.00 | -- | -- | Nickel content needs to reach 12% minimum, which will distinguish it from AISI 316L. |
EN 1.4435 | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | ≦0.025 | 12.50-15.00 | 17.00-18.50 | 2.50-3.00 | -- | -- | European (EN) specification of type 316L. |
AISI 316LVM | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.025 | ≦0.010 | 13.00-15.50 | 17.00-19.00 | 2.50-3.20 | -- | N≦0.10 | American (AISI) specification of type 316L specifically used for medical application. |
EN 1.4441 | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.025 | ≦0.010 | 13.00-15.50 | 17.00-19.00 | 2.50-3.20 | ≦0.10 | N≦0.10 | European (EUI) specification of type 316L specifically used for medical application. |
BioDur 316LS | ≦0.03 | ≦0.75 | ≦2.00 | ≦0.025 | ≦0.010 | 13.00-15.00 | 17.00-19.00 | 2.25-3.50 | ≦0.50 | N≦0.10 | An exclusive product of type 316L by Carpenter (American company) specifically used for medical application. |
1.4427So | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | 0.10-0.139 | 12.00-14.00 | 16.50-18.50 | 2.10-2.50 | -- | -- | European exclusive product, free machining material of type 316L. |
316LS-TLM | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | 0.10-0.13 | 12.00-14.00 | 16.50-18.50 | 2.10-2.50 | -- | -- | Free machining material of type 316L supplied exclusively by Taiwan Linkigi, equivalent to 1.4427So. |
316L+F | ≦0.03 | ≦1.00 | ≦2.00 | ≦0.045 | 0.10-0.20 | 11.00-14.00 | 17.00-19.00 | 2.00-3.00 | 1.00-2.00 | -- | Free machining material of type 316L supplied exclusively by Taiwan Linkig. |