SS 347 Precision StripASTM A240 · ASTM A666 / A480 · Manufacturer, stockist & exporter, India
AISI 347 · UNS S34700
An SS 347 precision strip is thin strip with close thickness tolerance, made from SS 347 to ASTM A240. Precision strip is used for springs, gaskets, electronics and precision components.
- ASTM A240
- ASTM A666 / A480
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an SS 347 Precision Strip?
- What it is
- Thin strip with close thickness tolerance
- Material
- ASTM A240
- Dimensions
- ASTM A666 / A480
- Grade
- SS 347 · UNS S34700
- Best at
- Welded high-temperature piping in refineries and power plants
SS 347 Precision Strip Specification
| Product | SS 347 Precision Strip |
|---|---|
| Material standard | ASTM A240 |
| Dimensional standard | ASTM A666 / A480 |
| Thickness | 0.1 – 6 mm by route |
| Width | Mill width or slit to order |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Precision Strip
Precision strip is used for springs, gaskets, electronics and precision components.
- Thin gauges
- Tight tolerances
- Hardness to order
More on choosing: Precision strip guide.
SS 347 Precision Strip: Why 347 for precision strips
Precision strip is used for springs, gaskets, electronics and precision components. In SS 347, 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 coil feeds stamping, tube-making and roll-forming lines. SS 347 is picked for welded high-temperature piping in refineries and power plants. |
|---|---|
| Typical service | Refinery hydroprocessing — Reactor effluent piping and exchangers. |
SS 347 Precision Strip Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 17.0 – 19.0 |
| Nickel | 9.0 – 13.0 |
| Niobium | 10 × C min, 1.00 max |
| Carbon | 0.08 max |
| Manganese | 2.00 max |
| Silicon | 0.75 max |
| Phosphorus | 0.045 max |
| Sulphur | 0.030 max |
SS 347 Precision Strip Mechanical Properties
| Annealed plate & sheet | Value |
|---|---|
| Tensile strength | 515 MPa · 75 ksi |
| Yield strength 0.2% | 205 MPa · 30 ksi |
| Elongation | 40% |
| Hardness | 201 HB max |
Full chemistry, properties and equivalents are on the SS 347 grade page.
SS 347 Precision Strips for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSS 347 Precision Strip — questions buyers ask
What thicknesses are available?
Commonly 0.05 – 1.5 mm, with hardness from annealed to full hard.
Which standard covers SS 347 precision strips?
The material is ASTM A240; dimensions follow ASTM A666 / A480. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a SS 347 precision strip?
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 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026