SS 904L Hairline Finish Sheet
ASTM A240 · ASTM A480 · Manufacturer, trader & exporter, India
Alloy 904L · UNS N08904
An SS 904L hairline finish sheet is sheet brushed with long continuous lines, made from SS 904L to ASTM A240. Hairline (HL) finish gives long unbroken brush lines for lift doors, façades and interiors.
See the SS 904L sheet grade form page for standards and sizes.
- ASTM A240
- ASTM A480
- EN 10204 3.1 / 3.2 as specified in the PO
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 904L Hairline Finish Sheet?
- What it is
- Sheet brushed with long continuous lines
- Material
- ASTM A240
- Dimensions
- ASTM A480
- Grade
- SS 904L · UNS N08904
- Best at
- Dilute sulphuric acid, phosphoric acid and chloride-bearing cooling water
SS 904L Hairline Finish Sheet Specification
| Product | SS 904L Hairline Finish Sheet |
|---|---|
| Material standard | ASTM A240 |
| Dimensional standard | ASTM A480 · hairline is a trade finish |
| Thickness | 0.3 mm to below 4.76 mm |
| Size | 1000 / 1219 / 1250 / 1500 × 2000 / 2438 / 2500 / 3000 mm or cut |
| Testing | PMI (as specified in the PO) · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 or 3.2 on request / as specified in the PO |
When to Choose a Hairline Finish Sheet
Hairline (HL) finish gives long unbroken brush lines for lift doors, façades and interiors.
- Continuous long lines
- Decorative
- PVC film protection
More on choosing: Hairline finish sheet guide.
SS 904L Hairline Finish Sheet: Why 904L for hairline finish sheets
Hairline (HL) finish gives long unbroken brush lines for lift doors, façades and interiors. In SS 904L, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Stainless sheet is formed and finished for visible or hygienic surfaces. SS 904L is picked for dilute sulphuric acid, phosphoric acid and chloride-bearing cooling water. |
|---|---|
| Typical service | Sulphuric acid plants — Coolers, piping and tanks for dilute sulphuric acid. |
| Matching filler | ER385 (AWS A5.9) |
SS 904L Hairline Finish Sheet Chemical Composition
| Element | Weight % (ASTM A240) |
|---|---|
| Nickel | 23.0–28.0 |
| Chromium | 19.0–23.0 |
| Molybdenum | 4.0–5.0 |
| Copper | 1.0–2.0 |
| Carbon | ≤0.020 |
| Manganese | ≤2.00 |
| Silicon | ≤1.00 |
| Nitrogen | ≤0.10 |
| Phosphorus | ≤0.045 |
| Sulphur | ≤0.035 |
| Iron | Balance |
Chemical composition per ASTM A240 for UNS N08904 (SS 904L). Confirm the edition named on your purchase order.
SS 904L Hairline Finish Sheet Mechanical Properties
Under technical review for TDS.
| Property | Current requirement |
|---|---|
| Tensile strength | As specified |
| Yield strength 0.2% | As specified |
| Elongation | As specified |
| Hardness | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification and condition to be verified: ASTM A240 for UNS N08904 — Annealed plate & sheet.
Full chemistry, properties and equivalents are on the SS 904L grade page.
Other SS 904L sheets
SS 904L Hairline Finish Sheet — questions buyers ask
Hairline or No.4?
Hairline has longer, continuous lines; No.4 has shorter brush marks.
Which standard covers SS 904L hairline finish sheets?
The material is ASTM A240 and dimensions and tolerances follow ASTM A480. Hairline is a trade finish with no A480 finish number, so describe it (line direction and grit) and state both standards on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 904L hairline finish sheet?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 or 3.2 certificates available on request / as specified in the PO; dimensional reports as required. PMI can be arranged depending on product and requirements, as specified in the PO.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026