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To ensure your project’s success, we offer you a solution tailored to your exact requirements and with the properties you need. This commitment includes:
> Ongoing support, solutions tailored to each market, expert advice on choosing of the right grade, responsive technical assistance, logistical offers and pooled expertise to work on joint development projects,
> The most complete and innovative range on the market,
> Specialities: ferritic and bright annealed stainless steels, proven hot-rolled quality and strip width of up to 2,000 mm.
Austenitic stainless steels
Grade designations | Standards | Chemical Compositions | Mechanical properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI | UNS | EN | C | Si | Mn | Cr | Mo | Ni | Others | Rm | Rp0.2 | A% | |
| Aperam P301A | 301 | S30100 | 1.4310 | 0.05 | 1.00 | 2.00 | 16.0 to 18.0 | 6.0 to 8.0 | 910 | 320 | 46 | ||
| Aperam P301F | 301LN | S30153 | 0.03 | 1.00 | 2.00 | 16.0 to 18.0 | 6.0 to 8.0 | 700 | 400 | 50 | |||
| Aperam P304A/B | 304 | S30400 | 1.4301 | 0.07 | 0.75 | 2.00 | 17.5 to 19.5 | 8.0 to 10.5 | 720 | 320 | 57 | ||
| Aperam P304C/D | 304L | S30403 | 1.4307 | 0.03 | 0.75 | 2.00 | 17.5 to 19.5 | 8.0 to 10.5 | 690 | 320 | 51 | ||
| Aperam P304T (304DDQ) | 304T | S30400 | 1.4301 | 0.03 | 0.75 | 2.00 | 17.5 to 19.5 | 9.0 to 10.5 | 610 | 280 | 58 | ||
| Aperam P304N (304DDQ) | 304 | S30400 | 1.4301 | 0.07 | 0.75 | 2.00 | 17.5 to 19.5 | 8.0 to 10.5 | 600 | 280 | 58 | ||
| Aperam P304H | 304H | S30409 | 0.04 to 0.10 | 0.75 | 2.00 | 18.0 to 20.0 | 8.0 to 10.5 | 710 | 320 | 58 | |||
| Aperam P310A | 310S/H | S31008 | 1.4845 | 0.035 to 0.08 | 1.50 | 2.00 | 24.0 to 26.0 | 19.0 to 22.0 | 600 | 380 | 42 | ||
| Aperam P321A | 321 | S32100 | 1.4541 | 0.08 | 0.75 | 2.00 | 17.0 to 19.0 | 9.0 to 12.0 | 5(C+N)<Ti<0.70 | 670 | 260 | 42 | |
| Aperam P347A | 347/H | S34709 | 0.04 to 0.08 | 0.75 | 2.00 | 17.0 to 19.0 | 9.0 to 13.0 | Nb = 10C min 1.00 max | 645 | 345 | 51 | ||
Sizes | ||||
|---|---|---|---|---|
| Surface condition and appearance | Grades | Thickness (mm) | Width (mm) (1) | Length (mm) |
| Cold Rolled | 301 | 0.40 - 3.50 | 1000 - 1270 | 1000 - 6100 |
| 301LN | 0.40 - 5.00 | 1250 - 1270 | ||
| 304/304L | 0.40 - 3.50 | 1000 - 1540 | ||
| 304DDQ (2) | 0.40 - 2.50 | 1000 - 1270 | ||
| 321 | 0.40 - 3.50 | 1000 - 1270 | ||
| 347 | 0.40 - 3.50 | 1000 - 1320 | ||
| Hot Rolled | 301 | 3.00 - 6.35 | 1219 - 1270 | 1600 - 6100 |
| 304/304L | 2.60 - 50.80 | 1000 - 1540 | ||
| 304H | 2.60 - 50.80 | 1000 - 1540 | ||
| 304 DDQ (2) | 2.85 - 6.00 | 1000 - 1270 | ||
| 321 | 3.00 - 50.80 | 1000 - 1540 | ||
| 347 | 2.85 - 50.80 | 1000 - 1540 | ||
| (1) For materials with grinded, brushed or polished finishing, the restriction related to each type of finishing must also be taken into consideration |
| (2) 304DDQ=304N/T |

Carbon
Chromium
Nickel
Molybdenum
0.015 to 0.10% carbon, 16 to 21% chromium, 6 to 26% nickel, 0 to 7% molybdenum. The presence of nickel improves corrosion resistance and makes stainless steel more ductile. The presence of molybdenum further enhances the resistance to corrosion in an acid medium. The most common grades are 304/304L et 316/316L.
Applications
Heating systems, resistor jackets, furnace equipment...

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Austenitic stainless steels containing manganese
Grade designations | Standards | Chemical Compositions | Mechanical properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI | UNS | EN | C | Si | Mn | Cr | Mo | Ni | Rm | Rp0.2 | A% | |
| Aperam P201F | 201LN | S20153 | 1.4376 | 0.03 | 0.20 to 0.60 | 6.40 to 7.50 | 17 to 17.5 | 4.0 to 4.5 | 700 | 500 | 45 | |
| Aperam P298A | 201 | S20100 | 1.4618 | 0.15 | 1.0 | 5.50 to 7.50 | 16 to 18 | 3.5 to 5.5 | 515 | 260 | 40 | |
| For dimensions, please contact us |
Austenitic stainless steels
containing manganese

Carbon
Manganese
Chromium
Nickel
Molybdenum
Austenitics with manganese or 200 series
These are chromium manganese steels, with a low nickel content (always below 5%).
Applications
Asphalt tankers, tubes, food containers, silos, conveyor chains, safety soles...

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Austenitic stainless steels containing molybdenum
Grade designations | Standards | Chemical Compositions | Mechanical properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI | UNS | EN | C | Si | Mn | Cr | Mo | Ni | Others | Rm | Rp0.2 | A% | |
| Aperam P316A | 316 | S31600 | 1.4401 | 0.07 | 0.75 | 2.00 | 16.5 to 18.0 | 2.00 to 2.5 | 10.00 to 13.0 | 650 | 340 | 51 | |
| Aperam P316B | 316L | S31603 | 1.4404 | 0.03 | 0.75 | 2.00 | 16.5 to 18.0 | 2.00 to 2.5 | 10.00 to 13.0 | 650 | 340 | 51 | |
| Aperam P317A | 317L | S31703 | 0.03 | 0.75 | 2.00 | 18.0 to 20.0 | 3.0 to 4.0 | 11.0 to 15.0 | 650 | 330 | 45 | ||
Sizes | ||||
|---|---|---|---|---|
| Surface condition and appearance | Grades | Thickness (mm) | Width (mm) (1) | Length (mm) |
| Cold Rolled | 316/316L | 0.40 - 3.50 | 1000 - 1540 | 1000 - 6100 |
| 317 | 2.50 - 2.99 | 1250 | ||
| Hot Rolled | 316/316L | 2.60 - 50.80 | 1000 - 1540 | 1600 - 6100 |
| 317 | 4.00 - 50.80 | 1000 - 1320 | ||
| (1) For materials with grinded, brushed or polished finishing, the restriction related to each type of finishing must also be taken into consideration |
Austenitic stainless steels
containing molybdenum

Carbon
Chromium
Nickel
Molybdenum
0.015 to 0.10% carbon, 16 to 21% chromium, 6 to 26% nickel, 0 to 7% molybdenum. The presence of nickel improves corrosion resistance and makes stainless steel more ductile. The presence of molybdenum further enhances the resistance to corrosion in an acid medium. The most common grades are 304/304L et 316/316L.
Applications
Heating systems, resistor jackets, furnace equipment...

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Duplex
Grade designations | Standards | Chemical Compositions | Mechanical properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI | UNS | EN | C | Si | Mn | Cr | Mo | Ni | Others | Rm | Rp0.2 | A% | |
| Aperam P398A | S32304 | 1.4362 | 0.03 | 1.00 | 2.00 | 22.0 to 24.0 | 0.10 to 0.60 | 3.50 to 5.50 | Cu = 0.10 to 0.60 | 740 | 560 | 30 | |
| Aperam P399B | S32205/S31803 | 1.4462 | 0.03 | 1.00 | 2.00 | 22.0 to 23.0 | 3.0 to 3.50 | 4.50 to 6.50 | 840 | 660 | 27 | ||
Sizes | ||||
|---|---|---|---|---|
| Surface condition and appearance | Grades | Thickness (mm) | Width (mm) (1) | Length (mm) |
| Cold Rolled | P398A | 1.20 - 3.00 | 1000 - 1320 | 1000 - 6100 |
| P399B | 1.20 - 3.00 | 1000 - 1320 | ||
| Hot Rolled | P398A | 3.50 - 50.80 | 1000 - 1540 | 1600 - 6100 |
| P399B | 3.50 - 50.80 | 1000 - 1540 | ||
| (1) For materials with grinded, brushed or polished finishing, the restriction related to each type of finishing must also be taken into consideration |

Carbon
Chromium
Nickel
Molybdenum
0.02% carbon, 0 to 4% molybdenum, 1 to 7% nickel and 21 to 26% chromium. They offer excellent qualities for a cost price that is contained because of their low nickel content, material that suffers from highly speculative prices.
Applications
Oil, gas, papermaking pulp, desalination sectors, chemical industry...

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Ferritic stainless steels
Grade designations | Standards | Chemical Compositions | Mechanical properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI | UNS | EN | C | Si | Mn | Cr | Mo | Ni | Others | Rm | Rp0.2 | A% | |
| K03 | 1.4003 | 0.03 | 1.00 | 1.50 | 10.5 to 12.5 | 1.00 | 475 | 280 | 30 | ||||
| K09 | 409 | S40910 | 1.4512 | 0.03 | 1.00 | 1.00 | 10.50 to 11.7 | 0.50 | 6(C+N)<Ti<0.5Q Nb= 0.17 max | 420 | 250 | 40 | |
| K09M/ | 409 | S40920 | 1.4512 | 0.03 | 1.00 | 1.00 | 10.50 to 11.7 | 0.50 | 10(C+N)<Ti<0.50 Nb= 0.17 max | 410 | 245 | 40 | |
| K30 | 430 | S43000 | 1.4016 | 0.08 | 1.00 | 1.00 | 16.0 to 18.0 | 0.75 | 520 | 350 | 30 | ||
| K30MD (430DDQ) | S43000 | 1.4016 | 0.08 | 1.00 | 1.00 | 16.0 to 18.0 | 0.75 | Nb = 0.60max | 480 | 330 | 31 | ||
| K39MD | S43932 | 0.03 | 1.00 | 1.00 | 17.0 to 19.0 | 0.50 | 0.20 + 4(C+N) < Ti + Nb < 0.75 AI= 0.15 Almax | 460 | 305 | 34 | |||
| K41 | 1.4509 | 0.03 | 1.00 | 1.00 | 17.5 to 18.5 | 0.50 | 3C + 0.30 < Nb < 1.00 ; Ti= 0.10 to 0.60 | 460 | 295 | 35 | |||
| K44 | S44400 | 1.4521 | 0.025 | 1.00 | 1.00 | 17.5 to 18.5 | 1.75 to 2.50 | 1.00 | 0.20 + 4(C + N) < Ti + Nb < 0.80 | 520 | 350 | 31 | |
Sizes | ||||
|---|---|---|---|---|
| Surface condition and appearance | Grades | Thickness (mm) | Width (mm) (1) | Length (mm) |
| Cold Rolled | K09/K09M | 0.40 - 3.09 | 1000 - 1270 | 1000 - 6100 |
| K03 | 1.00 - 3.09 | 1250 - 1270 | ||
| K30 | 0.40 - 3.00 | 1000 - 1320 | ||
| K30MD (2) | 0.40 - 0.80 | 1000 - 1320 | ||
| K39MD | 0.40 - 3.09 | 1000 - 1270 | ||
| K41 | 0.40 - 3.09 | 1000 - 1270 | ||
| K44 | 0.40 - 3.00 | 1000 - 1270 | ||
| Hot Rolled | K09/K09M | 2.60 - 8.00 | 1000 - 1270 | 1600 - 6100 |
| K03 | 3.00 - 50.80 | 1200 - 1520 | ||
| K30 | 3.00 - 3.49 | 1000 - 1320 | ||
| K39MD | 3.00 - 5.00 | 1000 - 1270 | ||
| K44 | 3.00 - 6.00 | 1200 - 1270 | ||
| (1) For materials with grinded, brushed or polished finishing, the restriction related to each type of finishing must also be taken into consideration |
| (2) K30MD=430DDQ |

Carbon
Chromium
Molybdenum
0.02 to 0.06% carbon, 10.5 to 30% chromium, 0 to 4% molybdenum. These grades commonly used internally are now being developed for envelope and structural products.
KARA is the Aperam brand for ferritic stainless steels.

Unlike other stainless steels, the KARA range doesn’t contain nickel and is thus immune from the erratic price fluctuations of this alloying elements.
Prices are more stable over time: a strong argument in the construction sector where projects costing and economic design are key elements.
Applications
Car exhaust systems, conveyor chains, cooking utensils, boilers domestic electrical appliances, domestic appliances, trim, dishware, heating, hot water tanks, tubes …

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Heavy Plates
Grade designations | AISI | EN | Nominal Thickness (mm) (2) | Standard Nominal Widths for Mill Edge Products (mm) | Standard Nominal Widths for Slitted Edge Products (mm) (1) | Additional Comments | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1040 | 1240 | 1270 | 1320 | 1520 | 1540 | ||||||
| Aperam P304A | 304 | 1.4301 | 9.0 to 12.70 14.0 to 50.80 | X | X | X | 1200/1219/1220/1250/1300 | For tubbing and specifications with Cr restriction only | |||
Aperam P304L | 304 | 1.4301 | 9.0 to 12.70 | X | X | X | X | X | 1000/1020/1200/1219/1220/1250/1300/1500 | ||
| 14.0 to 50.80 | X | X | X | X | X | 1000/1020/1200/1219/1220/1250/1300/1500/1524 | |||||
| Aperam P304H | 304H | 9.0 to 12.70 14.0 to 50.80 | X | X | X | 1220/1250/1300/1500 | |||||
| Aperam P310A | 310S | 9.0 to 12.70 | X | X | 1200/1219/1220/1250 | ||||||
| 14.0 to 50.80 | X | X | X | 1200/1219/1220/1250/1500 | |||||||
Aperam P316B | 316
| 1.4401
| 9.0 to 12.70 | X | X | X | X | X* | 1000/1200/1219/1220/1250/1300/1500* | *1500/1520 mm: Only if thickness ⩽ 12.00mm | |
| 14.0 to 50.80 | X | X | X | X | X | 1000/1200/1219/1220/1250/1300/1500/1524 | |||||
| Aperam P347A | 347 | 1.4550 | 9.0 to 12.70 | X | 1000 | Must comply with weight on item 4.5.2.b | |||||
| 14.0 to 50.80 | X | X | 1000/1500/1524 | ||||||||
Aperam 31803 (P399B) | 31803 | 1.4462 | 14.0 to 40.00 | X | 1300 | ||||||
| Aperam 2304 (P398A) | 2304 | 1.4362 | 9.0 to 12.00 14.0 to 40.00 | X | 1200/1219/1220 | ||||||
| Aperam P410D | 410 | 1.4003 | 9.0 to 12.70 | X | X | X | 1200/1219/1220/1250/1500 | Unpickled only | |||
(1) Tolerances are not guaranteed for the first and last 5 meters, where it may reach 10% of nominal thickness.
(2) Thickness measuring is done along the length, with minimum distance of 15mm from the edge for slitted edge and 25mm from the edge for mill edge products.
Aperam designations | DIN | ASTM | Description |
|---|---|---|---|
| IA | Hot rolled plate with thickness higher than 12.70mm, with no annealing and no pickling | ||
| IT | 1D | NR1 | Hot rolled plate with thickness higher than or equal to 9.00mm, annealed and pickled |
| S3 (1) | Hot rolled plate, annealed, pickled, with thickness higher/equal to 14mm, supplied to the customer with finishing identical to IT/NR1, however with suitable extra metal, in view of a later grinding without affecting thickness tolerances as specified | ||
| S1 | Super Finish - Hot rolled plate, annealed, pickled and receiving a final grinding to obtain a roughness from 0.50 to 1.00 μm Ra. (similar to No.04 ASTM) |
Martensitic stainless steels
Grade designations | Standards | Chemical Compositions | Mechanical properties | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AISI | UNS | EN | C | Si | Mn | Cr | Mo | Ni | Others | Rm | Rp0.2 | A% | |
| Aperam P420A | 420 | S42000 | 1.4028 | 0.15 | 1.00 | 1.00 | 12.0 to 14.0 | 0.50 | 0.75 | 620 | 370 | 26 | |
| Aperam P498V | 1.4116 | 0.45 to 0.55 | 1.00 | 1.00 | 14.0 to 14.5 | 0.50 to 0.80 | V = 0.1 to 0.2 | ||||||
Sizes | ||||
|---|---|---|---|---|
| Surface condition and appearance | Grades | Thickness (mm) | Width (mm) (1) | Length (mm) |
| Cold Rolled | P420A | 0.60 - 3.50 | 1000 - 1240 | 1000-6100 |
| Hot Rolled | P420A | 3.50 - 8.00 | 1200 - 1240 | 1600 - 6100 |
| P498V | 2.85 - 8.00 | 1000 - 1040 | ||
| (1) For materials with grinded, brushed or polished finishing, the restriction related to each type of finishing must also be taken into consideration |