AISI 304 / 304L · 08Kh18N10 · 1.4301 · 2B / BA / No.1 · t 0.5–50 · 1 500×3 000 · ASTM A240
Stainless sheet AISI 304 / 304L
Chromium-nickel austenitic sheet for food and chemical equipment, tanks and architecture
AISI 316L · 03Kh17N14M3 · 1.4404 · 2B / No.1 · t 0.5–50 · 1 500×3 000 · ASTM A240
Stainless sheet AISI 316L
Austenitic sheet with molybdenum for chloride environments, chemical plants, water treatment and marine equipment
ASTM A240/A240MEN 10088-2:2014GB/T 3280-2015GB/T 4237-2015GB/T 20878-2007GOST 5582-75GOST 7350-77GOST 5632-2014AISI 316LAISI 31603Kh17N14M3022Cr17Ni12Mo21.44041.4401
Parameters
| Parameters | |
|---|---|
| Thickness | cold-rolled 0.5–3 mm; hot-rolled 3–50 mm |
| Width | 1 000, 1 219, 1 250, 1 500 mm |
| Length | 2 000, 2 438, 3 000, 6 000 mm |
| Steel grade | 316L, 316; 03Kh17N14M3; 1.4404, 1.4401 |
| Molybdenum | 2–3 % per ASTM A240 |
| Finish | 2B, BA, No.1, No.4, HL |
| Certificate | Mill MTC with heat chemical composition; on request — EN 10204 3.1 |
Sizes and weight
| t, mm | Weight, kg/m² | Sheet 1 500×6 000, kg |
|---|---|---|
| 0.5 | 3.93 | 35.3 |
| 0.8 | 6.28 | 56.5 |
| 1 | 7.85 | 70.6 |
| 1.2 | 9.42 | 84.8 |
| 1.5 | 11.8 | 106 |
| 2 | 15.7 | 141.3 |
| 2.5 | 19.6 | 176.6 |
| 3 | 23.5 | 212 |
| 4 | 31.4 | 282.6 |
| 5 | 39.3 | 353.3 |
| 6 | 47.1 | 423.9 |
| 8 | 62.8 | 565.2 |
| 10 | 78.5 | 706.5 |
| 12 | 94.2 | 847.8 |
| 16 | 125.6 | 1 130 |
| 20 | 157 | 1 413 |
Theoretical weight at steel density 7.85 g/cm³. Actual batch weight is by scale and mill certificate.
Description
AISI 316L is an austenitic chromium-nickel-molybdenum steel: chromium 16–18 %, nickel 10–14 %, molybdenum 2–3 %, carbon up to 0.03 % to ASTM A240/A240M. Molybdenum raises resistance to pitting and crevice corrosion in chloride-bearing media — sea water, brines, water treatment reagents, cleaning solutions — where 304 steel develops pitting. Thin sheet is cold-rolled to GB/T 3280-2015 with a 2B finish, heavy plate is hot-rolled to GB/T 4237-2015 with a No.1 finish. The nearest equivalents are 03Kh17N14M3 to GOST 5632-2014, 022Cr17Ni12Mo2 to GB/T 20878, 1.4404 to EN 10088-2.
316L differs from 316 in carbon up to 0.03 %: welds in heavy plate retain resistance to intergranular corrosion without heat treatment. It differs from 304 in molybdenum and a higher nickel content, so 316L is chosen by the service environment, not by default. The nearest titanium-bearing GOST equivalent is 10Kh17N13M2T, the equivalent of 316Ti, not of 316L. The specification fixes the ASTM or EN grade against which the mill issues the certificate, the surface finish and the presence of protective film.
At the mill before shipment the bureau's inspector checks the composition of the sample sheets with a portable X-ray fluorescence analyser — molybdenum, nickel and chromium content against the grade limits — and compares it with the mill test certificate (MTC) by heat number; this rules out substitution of 316L by 304 or 201 steel. Thickness is measured with a micrometer at several points, format and squareness of cut with a tape, and the surface is examined for scores, dents, heat tint and damage to the film. Packaging with interleaving between sheets is checked. The report with photographs is handed to you before shipment. The calculated table below uses a density of 7.85 g/cm³; the density of 1.4404 steel to EN 10088 is 8.0 g/cm³, so the actual weight by weighing at the mill is about 2 % above the calculated one and is stated in the packing list.
Applications
- water treatment and desalination equipment
- tanks and pipework for acids, alkalis and reagents
- heat exchangers and condensers
- pharmaceutical and biotechnology equipment
- marine and port structures
- textile dyeing plant equipment
Packing and shipment
Timber pallet or crate: sheets with protective film, paper interleaving between sheets, steel top cover, strapped with steel band; mill tag with grade, heat, thickness, finish and number of sheets.
Grade equivalents
| GOST | GB (China) | ASTM | EN | Note |
|---|---|---|---|---|
| St3sp / St3ps | Q235B | A36 | S235JR | Nearest equivalents. Q235B and S235JR specify impact toughness at +20 °C, GOST 14637 by category; A36 has a higher yield strength, 250 MPa. |
| 09G2S | Q355B (Q345B before 2018) | A572 Grade 50 | S355JR / S355J2 | Nearest equivalents by strength. The 09G2S category for impact toughness at −40 or −70 °C is specified separately; Q355B is tested at +20 °C. |
| 08ps | DC01 | A1008 CS Type B | DC01 | SPCC to JIS G3141 is the same class of general-purpose cold-rolled low-carbon steel. |
| 08ps to GOST 14918 | DX51D+Z | A653 CS Type B | DX51D+Z | The DX51D+Z designation in GB/T 2518 matches EN 10346. Zinc coating weight (Z100–Z275) is specified separately from the grade. |
| GOST 34180 based on 08ps | TDC51D+Z | A755 based on A653 | DX51D+Z to EN 10169 | The grade describes the steel substrate and the zinc. Type and thickness of the polymer layer, RAL colour and environment class are set by the specification. |
| 08Kh18N10 | 06Cr19Ni10 | 304 | 1.4301 (X5CrNi18-10) | 12Kh18N10T is the equivalent of titanium-stabilised grade 321, not of 304. |
| 03Kh18N11 | 022Cr19Ni10 | 304L | 1.4307 (X2CrNi18-9) | Low-carbon version of 304 (carbon up to 0.03 %) for welded structures without subsequent heat treatment. |
| 03Kh17N14M3 | 022Cr17Ni12Mo2 | 316L | 1.4404 (X2CrNiMo17-12-2) | Molybdenum 2–3 % to ASTM A240. Mills in China certify to ASTM or EN; the GOST grade is entered in the MTC on request as an equivalent. |
Equivalents are the closest match, not identical: chemistry and tolerances differ between standards. The exact grade and standard are written into the contract.
Related items
08ps · DC01 · SPCC · t 0.5–3 · 1 250×2 500 · GOST 19904
Cold-rolled sheet 08ps
Cold-rolled low-carbon steel sheet with close thickness tolerance and clean surface for stamping, bending and painting
Buyer questions
How to read a mill test certificate for sheet
In the certificate (MTC) the mill states the standard and grade, heat number, thickness and format, chemical composition of the heat, mechanical test results and batch number. We check the heat number against the tag on every bundle and the marking on the sheets, and the composition and properties against the requirements of the standard named in the specification. A certificate without a heat number, or with a composition outside the limits of the standard, is grounds for not accepting the batch.
How St3sp differs from St3ps and from Q235B
St3sp is killed steel, fully deoxidised; St3ps is semi-killed. For welded structures and service at sub-zero temperatures St3sp with a category to GOST 14637 is usually specified. Q235B is the Chinese grade of the same class with a yield strength of 235 MPa minimum and an impact test at +20 °C. A mill in China issues the certificate to GB/T 700 or, under contract, rolls the plate to GOST requirements and states this in the MTC.
How sheet tonnage is calculated
Theoretical weight per square metre is 7.85 kg for every millimetre of thickness; the weight of a sheet is thickness multiplied by area and by 7.85. Actual weight differs because of the thickness tolerance: a minus tolerance makes the batch lighter than theoretical. In the specification we fix which weight the batch is settled by — theoretical or actual by weighing at the mill — and the same weight goes into the packing list.
What is checked during inspection at the mill
Thickness with a micrometer at several points of every sample sheet, width and length with a tape, flatness and squareness of cut, surface for laminations, laps and scale, marking and tags, certificate by heat and composition, packaging. For coated products — zinc or polymer thickness with a coating gauge; for stainless steel — a composition check with a portable analyser. The result is a report with photographs before shipment.
How a batch is calculated
The batch is calculated for your volume — send the specification: grade and standard, thickness, sheet format, coating and surface, quantity in sheets or tonnes, certificate requirements. From the specification we find a producing mill, agree the rolling and packaging terms and reply with a calculation.
Price request
Send your specification and we will quote your batch
Steel pricing depends on grade, size, tonnage and delivery terms on the day of contract. A number on the page would be wrong by the time you read it.
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