Stainless Steel Precision Strip
Spring strip in 1.4310, thin strip and foil from 0.05 mm, narrow slit strip and slit coils in 304, 316L, 321 and ferritic grades, to your temper, tolerance, width and coil size. Certificate availability, temper and traceability confirmed in our quotation.
Precision strip
Choose your strip
For springs, stampings, heat exchangers, exhaust parts and tube mills. Tell us the part and the line it runs on; we propose grade, temper, tolerance and coil build.
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Spring strip 1.4310 (301)
- Tensile classes to EN 10151, from C850 to C1900
- Or rolled to your own tensile range, for example 1,150–1,300 MPa
- For flat springs, clips, spring washers and safety parts
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Thin strip and foil
- From 0.05 mm foil to 0.5 mm strip, bright annealed (2R) or 2B
- 304, 316L and 321; thickness tolerance to EN ISO 9445-1, precision class on request
- For heat-exchanger plates and fins, gaskets, shims and filters
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Narrow slit strip
- Widths from a few millimetres; 0.05 to 3 mm thick
- Slit edge; deburred or rounded edges on request
- Width tolerance to EN ISO 9445-1 or as agreed
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Ferritic and heat-resistant strip
- 430, 1.4512 (409), 441 and 444 for exhaust, heat-exchanger and appliance parts
- 1.4828 (309) for flexible hoses and parts running hot
- 2B, 2D or bright annealed, depending on grade; slit to your width
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Slit coils for tube and profile mills
- Slit from wide coils to your strip widths, 0.3 to 8 mm thick
- Inner diameter and coil weight to suit your line
- 304/304L, 316L/316Ti, 441 and 444 for welded tube and roll-formed profiles
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Your material
Your own coils, slit to width
- Send us the coil data and the strip widths you need
- We arrange slitting, packing and transport as one job
- 0.05 to 8 mm thick, strips from a few millimetres wide
- From a single coil to regular runs
Images show typical products and uses. Cut-to-length, cut parts and surface finishing: see processing services.
Strip calculator and tolerance finder
Weight per metre, the length of strip in a coil and the coil outside diameter, with the EN ISO 9445-1 thickness and width tolerances for your size. The result goes straight into your enquiry.
Nominal values from nominal sizes and the grade density (EN 10088-1). The coil diameter assumes tightly wound strip with nothing between the wraps. Tolerances summarise EN ISO 9445-1 for strip below 600 mm wide; the standard governs.
1.4310 spring strip: tensile strength classes to EN 10151
Cold-rolled spring strip is ordered by tensile strength class. The highest class possible depends on the thickness; we confirm the class and the certificate values in our offer. Annealed strip or your own tensile range on request.
- C850850–1,000 MPa
- C10001,000–1,150 MPa
- C11501,150–1,300 MPa
- C13001,300–1,500 MPa
- C15001,500–1,700 MPa
- C17001,700–1,900 MPa
- C19001,900–2,200 MPa
Narrow strip tolerances to EN ISO 9445-1
For cold-rolled strip below 600 mm wide, in mm. Name the tolerance class, normal or precision, in your enquiry.
Thickness tolerances
| Thickness (mm) | Width below 125 | 125 to below 250 | 250 to below 600 | |||
|---|---|---|---|---|---|---|
| Normal | Precision | Normal | Precision | Normal | Precision | |
| 0.05 to below 0.10 | ±0.10 t | ±0.04 t | ±0.12 t | ±0.08 t | ±0.15 t | ±0.08 t |
| 0.10 to below 0.15 | ±0.010 | ±0.006 | ±0.015 | ±0.008 | ±0.020 | ±0.010 |
| 0.15 to below 0.20 | ±0.015 | ±0.008 | ±0.020 | ±0.010 | ±0.025 | ±0.012 |
| 0.20 to below 0.25 | ±0.015 | ±0.008 | ±0.020 | ±0.010 | ±0.025 | ±0.012 |
| 0.25 to below 0.30 | ±0.017 | ±0.009 | ±0.025 | ±0.012 | ±0.030 | ±0.015 |
| 0.30 to below 0.40 | ±0.020 | ±0.010 | ±0.025 | ±0.012 | ±0.030 | ±0.015 |
| 0.40 to below 0.50 | ±0.025 | ±0.012 | ±0.030 | ±0.015 | ±0.035 | ±0.018 |
| 0.50 to below 0.60 | ±0.030 | ±0.014 | ±0.030 | ±0.015 | ±0.040 | ±0.020 |
| 0.60 to below 0.80 | ±0.030 | ±0.015 | ±0.035 | ±0.018 | ±0.040 | ±0.025 |
| 0.80 to below 1.00 | ±0.030 | ±0.018 | ±0.040 | ±0.020 | ±0.050 | ±0.025 |
| 1.00 to below 1.20 | ±0.035 | ±0.020 | ±0.045 | ±0.025 | ±0.050 | ±0.030 |
| 1.20 to below 1.50 | ±0.040 | ±0.020 | ±0.050 | ±0.025 | ±0.060 | ±0.030 |
| 1.50 to below 2.00 | ±0.050 | ±0.025 | ±0.060 | ±0.030 | ±0.070 | ±0.035 |
| 2.00 to below 2.50 | ±0.050 | ±0.025 | ±0.070 | ±0.030 | ±0.080 | ±0.040 |
| 2.50 to 3.00 | ±0.060 | ±0.030 | ±0.070 | ±0.035 | ±0.090 | ±0.045 |
t = thickness. By agreement the tolerance can be split differently (all plus, all minus or uneven), as long as the total range stays the same.
Width tolerances, slit edge
| Thickness (mm) | Width below 40 | 40 to below 125 | 125 to below 250 | 250 to below 600 | ||||
|---|---|---|---|---|---|---|---|---|
| Normal | Precision | Normal | Precision | Normal | Precision | Normal | Precision | |
| below 0.25 | +0.17 | +0.10 | +0.20 | +0.12 | +0.25 | +0.15 | +0.50 | +0.40 |
| 0.25 to below 0.50 | +0.20 | +0.12 | +0.25 | +0.15 | +0.30 | +0.17 | +0.60 | +0.40 |
| 0.50 to below 1.00 | +0.25 | +0.15 | +0.25 | +0.17 | +0.40 | +0.20 | +0.70 | +0.50 |
| 1.00 to below 1.50 | +0.25 | +0.15 | +0.30 | +0.17 | +0.50 | +0.22 | +1.00 | +0.60 |
| 1.50 to below 2.50 | – | – | +0.40 | +0.20 | +0.60 | +0.25 | +1.00 | +0.60 |
| 2.50 to 3.00 | – | – | +0.50 | +0.25 | +0.60 | +0.25 | +1.20 | +0.80 |
Plus tolerances, minus zero. By agreement they can be split plus and minus, or all minus.
Strip edges
Slitting gives a slit edge. Deburred and rounded edges on request: name the burr limit or the edge profile in your enquiry and we confirm it for your size.
- Slit edgeStandardThe edge as it comes from the slitter, with a small burr on one side.
- Deburred edgeOn requestBurr removed and the corners slightly broken.
- Rounded edgeOn requestFull radius across the thickness, for strip that is handled by hand or must not cut.
How to get a price
A strip quotation in three steps
Strip, foil and slit coils on one quotation, with the required documentation checked before we quote.
Send us
- Grade and temper or tensile strength (for example 1.4310 C1300), the finish, and your drawing or specification
- Thickness and width with the tolerance class, the edge, and the coil build: inner diameter, maximum outside diameter or coil weight
- Quantity per delivery and per year, the delivery place and date, and the certificates you need
Good to know
- Slit from available coil or made to orderStrip slit from available coil typically ships in two to three weeks. Strip rolled to a tensile class or a special size is made to order and takes longer. We confirm the date in our offer.
- CertificatesWe confirm EN 10204 3.1 certificate availability and the documented mechanical properties for the quoted temper and lot. Tell us before we quote if you require EN 10204 3.2 or extra tests; we check feasibility and confirm the scope, cost and lead time.
- From a trial coil to a programmeSingle coils or annual programmes with call-offs. Minimum quantities depend on grade and size; we state them in our offer.
Recent requests
Specifications from customer enquiries of recent months, without names:
- 1.4310 spring strip, 0.3–0.4 mm × 30–90 mm, on a 508 mm inner diameter
- 316L and 430 bright annealed, 0.10 mm × 6–60 mm
- 1.4512 (409) bright annealed, 0.30 mm, slit 400–450 mm wide
- 1.4828 (309) bright annealed, 0.20 mm, for flexible hoses
- 304 2B, 2.0 mm, slit to 41 mm, 3–4 t per batch
- 430 2B, 1.5–2.0 mm × 51–197 mm, about 100 t over six months
- 316Ti slit coils, 3.5 mm × 500–700 mm, for a tube mill
Grades for precision strip
| Grade (EN / AISI) | Type | Typical uses |
|---|---|---|
| 1.4310 / 301 | Austenitic, cold-rolled to spring tempers | Flat springs, clips, spring washers, safety parts |
| 1.4301 / 304 | Austenitic | Stampings, deep-drawn parts, clamps and bands |
| 1.4307 / 304L | Austenitic, low carbon | Welded parts and welded tube |
| 1.4404 / 316L | Austenitic with molybdenum | Heat exchangers, gaskets, food and marine parts |
| 1.4541 / 321 | Austenitic, titanium-stabilised | Bellows, expansion joints, flexible elements |
| 1.4016 / 430 | Ferritic | Appliance and trim parts |
| 1.4512 / 409 | Ferritic, titanium-stabilised | Exhaust systems |
| 1.4509 / 441 | Ferritic, niobium and titanium | Exhaust and heat-exchanger parts |
| 1.4521 / 444 | Ferritic with molybdenum | Water heaters and heat exchangers |
| 1.4828 / 309 | Heat-resistant austenitic | Flexible hoses and parts running hot |
Standards and documents
- Spring strip: EN 10151; flat products: EN 10088-2 and ASTM A240
- Heat-resistant grades: EN 10095
- Tolerances: EN ISO 9445-1 for strip below 600 mm wide, EN ISO 9445-2 for wider strip
- EN 10204 3.1 certificate availability, temper values and traceability confirmed per lot; EN 10204 3.2 feasibility checked before quotation
Frequently asked questions
What is precision strip?
Cold-rolled stainless strip, usually below 600 mm wide, supplied to tight thickness and width tolerances and to a set temper, finish, edge and coil build. It is the starting material for springs, stampings, heat exchangers, bellows and welded tube.
Which thicknesses and widths can you supply?
From 0.05 mm foil to about 3 mm for narrow strip, and slit coils up to 8 mm. Widths start at a few millimetres; the narrowest possible width depends on the thickness. Send us the size and we confirm it in our offer.
Which tempers are available for 1.4310 spring strip?
The EN 10151 tensile strength classes C850 (850–1,000 MPa), C1000, C1150, C1300, C1500, C1700 and C1900 (1,900–2,200 MPa). The highest class possible depends on the thickness. Strip can also be rolled to your own tensile range or supplied annealed.
What is the difference between normal and precision tolerance?
EN ISO 9445-1 has two tolerance classes for narrow strip. For 0.30 mm strip below 125 mm wide, the thickness tolerance is ±0.020 mm in the normal class and ±0.010 mm in the precision class. The tolerance finder on this page shows both for your size; name the class in your enquiry.
How do I work out the length of strip in a coil?
Divide the coil weight by the weight per metre, which is thickness × width × density ÷ 1,000 (sizes in mm, density in kg/dm³: 7.9 for 1.4310 and 304, 8.0 for 316L, 7.7 for the ferritic grades). A 100 kg coil of 0.30 × 20 mm 1.4310 holds about 2,110 m. The calculator on this page also gives the coil outside diameter.
What edge will the strip have?
Slitting gives a slit edge. Deburred or rounded edges are available on request for many sizes; tell us the burr limit or the edge profile you need and we confirm it in our offer.
Can you slit our own coils?
Yes. Send us the coil data (grade, thickness, width, weight and inner diameter) and the strip widths you need. We arrange slitting, packing and transport and quote it as one job.
Which coil sizes can you deliver?
Inner diameters from about 200 to 610 mm, with the outside diameter and coil weight to suit your decoiler, from small coils of a few kilograms upwards. Tell us the limits of your line.
Which certificates do you supply?
We confirm the manufacturer’s EN 10204 3.1 document, chemical analysis, relevant mechanical properties and traceability for the quoted lot. For EN 10204 3.2, we check the material, manufacturer and inspection route before quoting. A separate inspection report is not automatically a 3.2 certificate.
How long does delivery take?
Strip slit from available coil typically ships in two to three weeks. Strip rolled to a tensile class or a special size is made to order and usually takes two to four months. We confirm the date in our offer; precision strip can travel with coils, sheets and plates from Beveren (Port of Antwerp).
Related: stainless steel coils, sheets and plates · processing services · tubes, pipes and hollow sections
Need precision strip?
Send grade, temper, thickness, width, tolerance and coil size. We reply with price and availability.