Sheets · ASTM A480
No.1 Finish Sheet — ASTM A480
No.1 finish sheet — hot-rolled, annealed and pickled sheet. No.1 is a dull, rough finish for industrial use where appearance does not matter — tanks, chutes and heat-resisting parts.
- ASTM A480
- 10 grades
- EN 10204 3.1 / 3.2
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
No.1 Finish Sheet: What to Know Before Ordering
- Hot rolled, annealed, pickled
- Dull and rough
- Heavier gauges
No.1 Finish Sheet Materials & Grades
| Grade | Material standard | Best for |
|---|---|---|
| SS 904L no.1 finish sheet | ASTM A240 | Dilute sulphuric acid, phosphoric acid and chloride-bearing cooling water |
| SS 304 no.1 finish sheet | ASTM A240 | General corrosion resistance, food, water and architectural work |
| SS 304L no.1 finish sheet | ASTM A240 | Welded tanks, piping and vessels in general corrosive service |
| SS 310 / 310S no.1 finish sheet | ASTM A240 | Furnaces, burners and heat treatment at high temperature |
| SS 316 / 316L no.1 finish sheet | ASTM A240 | Chloride-bearing process fluids, marine air and pharmaceutical service |
| SS 321 no.1 finish sheet | ASTM A240 | High-temperature service between 425 and 815 °C |
| SS 347 no.1 finish sheet | ASTM A240 | Welded high-temperature piping in refineries and power plants |
| Duplex 2205 no.1 finish sheet | ASTM A240 | Strength with chloride resistance at a stainless-steel budget |
| Super Duplex 2507 no.1 finish sheet | ASTM A240 | Seawater and high-chloride service where strength also matters |
| Super Duplex S32760 no.1 finish sheet | ASTM A240 | Seawater firewater, injection and offshore piping |
Other sheets
2B finish sheetCold-rolled sheet that is annealed, pickled and skin-passed.BA finish sheetSheet bright-annealed in a controlled atmosphere.No.4 finish sheetSheet brushed with 120–180 grit abrasives.Hairline finish sheetSheet brushed with long continuous lines.Mirror No.8 finish sheetSheet polished to a mirror surface.Chequered sheetSheet with a raised anti-slip pattern.
No.1 finish sheet — questions buyers ask
Where is No.1 finish used?
Industrial parts, tanks and heat-resisting components where surface appearance is not important.
Which grades are no.1 finish sheets available in?
SS 904L, SS 304, SS 304L, SS 310 / 310S, SS 316 / 316L, SS 321, SS 347, Duplex 2205, Super Duplex 2507, Super Duplex S32760.
Which standard covers no.1 finish sheet dimensions?
ASTM A480. The material standard depends on the grade.
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