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At JM Hardware®, we pride ourselves on being a trusted Standard Duplex Stainless Steel Manufacturer, offering high-performance fasteners and components tailored for demanding industrial environments. Duplex stainless steel stands out for its unparalleled strength, exceptional corrosion resistance, and cost-effective performance, making it the material of choice for industries such as oil & gas, marine, petrochemical, and construction. With our advanced manufacturing capabilities and commitment to quality, we deliver duplex stainless steel fasteners that meet the most rigorous standards and exceed your expectations.
Standard Duplex Stainless Steel: Chromium content between 19.5 and 23 percent, nickel content between 3 and 6.5 percent
| Lean Duplex | ||||||||||||
| ID | Name | ASTM | EN-Nr. | C max. | Cr | Ni | Mo | N | Mn max. | Cu | W | PRE* |
| 2101 | S32101 | 1.4162 | 0,04 | 21,0-22,0 | 1,35-1,7 | 0,1 – 0,8 | 0,20-0,25 | 4,0-6,0 | 0,1-0,8 | – | 26 | |
| F66 | 2202 | S32202 | 1.4062 | 0,03 | 21,5-24,0 | 1,0-2,8 | 0,45 | 0,18-0,26 | 2,0 | – | 26 | |
| F68 | 2304 | S32304 | 1.4362 | 0,03 | 21,5-24,5 | 3,0-5,5 | 0,05-0,6 | 0,05-0,20 | 2,5 | 0,05-0,60 | – | 26 |
| 2102 | S82011 | 0,03 | 20.5-23.5 | 1.00-2.00 | 0,1 – 1.00 | 0.15-0.27 | 2.00-3.00 | 0.5 | – | 26 | ||
| Standard Duplex | ||||||||||||
| ID | Name | ASTM | EN-Nr. | C max. | Cr | Ni | Mo | N | Mn max. | Cu | W | PRE* |
| F51 | 2205 | S31803 | 1.4462 | 0,03 | 21,0-23,0 | 4,5-6,5 | 2,5-3,5 | 0,08-0,20 | 2,0 | – | – | 33 |
| F60 | 2205 | S32205 | 1.4462 | 0,03 | 22,0-23,0 | 4,5-6,5 | 3,0-3,5 | 0,14-0,20 | 2,0 | – | – | 35 |
| 2003 | S32003 | 1.4662 | 0,03 | 19.5-22.5 | 3.0-4.0 | 1.5-2.0 | 0.14-0.2 | 2,0 | – | – | 30 | |
| 2404 | S82441 | 1.4662 | 0,03 | 23.0-25.0 | 3.0-4.5 | 1.00-2.00 | 0.20-0.30 | 2.5-4.0 | 0.10-0.80 | – | 33 | |
| Super Duplex | ||||||||||||
| ID | Name | ASTM | EN-Nr. | C max. | Cr | Ni | Mo | N | Mn max. | Cu | W | PRE* |
| F59 | S32520 | 1.4507 | 0,03 | 24,0-26,0 | 5,5-8,0 | 3,0-4,0 | 0,20-0,35 | 1,5 | 0,5-2,0 | – | >40 | |
| F61 | 255 | S32550 | 1.4507 | 0,04 | 24,0-27,0 | 4,5-6,5 | 2,9-3,9 | 0,10-0,25 | 1,5 | 1,5-2,5 | – | >40 |
| F53 | 2507 | S32750 | 1.441 | 0,03 | 24,0-26,0 | 6,0-8,0 | 3,0-5,0 | 0,24-0,32 | 1,2 | 0,50 | – | 43 |
| F55 | Z100 | S32760 | 1.4501 | 0,03 | 24,0-26,0 | 6,0-8,0 | 3,0-4,0 | 0,20-0,30 | 1,0 | 0,5-1,0 | 0,5-1,0 | 42 |
| Hyper Duplex | ||||||||||||
| Name | ASTM | EN-Nr. | C max. | Cr | Ni | Mo | N | Mn max. | Cu | W | PRE* | |
| 2707 | S32707 | – | 0,03 | 26,0-29,0 | 5,5-9,5 | 4,0-5,0 | 0,30-0,50 | 1,5 | 1,00 | – | 49 | |
| 3207 | S33207 | – | 0,03 | 29,0-33,0 | 6,0-9,0 | 3,0-5,0 | 0,40-0,60 | 1,5 | 1,00 | – | 50 | |
| Austenitic Grades | ||||||||||||
| ASTM | EN-Nr. | C max. | Cr | Ni | Mo | N | Mn | Cu | W | PRE* | ||
| 304L | 1.4307 | 0,03 | 17,5-19,5 | 8,0-10,5 | – | 0,11 | – | – | – | 18 | ||
| 316L | 1.4404 | 0,03 | 16,5-18,5 | 10,0-13,0 | 2,0-2,5 | 0,10 | – | – | – | 24 | ||
| 904L | 1.4539 | 0,02 | 19,0-21,0 | 24,0-26,0 | 4,0-5,0 | 0,15 | – | 1,20 | – | 34 | ||
| S31254 | 1.4547 | 0,2 | 19,5-20,5 | 17,5-18,5 | 6,0-7,0 | 0,18-0,25 | – | 0,5-1,0 | – | 43 | ||
Forms of Stand Duplex SS Fastener Available at JM Hardware®
| Product name | Standard No. | Size | |
| BOLT | HEX HEAD BOLT | ANSI/ASME B18.2.1, DIN933, DIN931 | 1/4”-4”, M5-M100 |
| SOCKET CAP SCREW | ANSI/ASME B18.3, DIN912, DIN7991, DIN913/916 | 1/4”-4”, M5-M100 | |
| FLANGE BOLT | ANSI/ASME B18.2.3.4M-2001, DIN 6921 | 1/2”-4”, M10-M100 | |
| EYE BOLT | ANSI/ASME, DIN standard | 1/2”-4”, M10-M100 | |
| OTHER BOLT | U BOLT, T BOLT, J BOLT, SQURE HEAD BOLT, SHOULDER BOLT, AND NON-STANDARD BOLT ACCORDING TO CUSTOMER NEEDS. | ||
| STUD | THREADED ROD/BAR | ANSI/ASME, DIN975/DIN976 | 3/8”-4”, M5-M100 |
| DOUBLE ENDS STUDS | ANSI/ASME, DIN STANDARD | 3/8”-4”, M5-M100 | |
| NUT | HEX NUT | ANSI/ASME B18.2.2, DIN934 | 1/4”-4”, M5-M100 |
| HEAVY HEX NUT | ANSI/ASME B18.2.2, DIN standard | 1/2”-4”, M12-M100 | |
| NYLON LOCK NUT | ANSI/ASME B18.16.6-2008, DIN 985,DIN982 | 1/2”-4”, M12-M100 | |
| FLANGE NUT | ANSI/ASME, DIN6923 | 1/2”-4”, M12-M100 | |
| COUPLING NUT/LONG NUT | ANSI/ASME, DIN STANDARD | 1/2”-4”, M12-M100 | |
| SQUARE NUT | ANSI/ASME, DIN 557 | 1/2”-4”, M12-M100 | |
| HEX DOOMD CAP NUT | ANSI/ASME, DIN1587 | 1/2”-4”, M12-M100 | |
| WING NUT | ANSI/ASME, DIN315 | 1/2”-4”, M12-M100 | |
| WASHER | FLAT WASHER | ANSI/ASME B18.22.1, DIN125 | 3/8”-4”, M6-M100 |
| SPRING WASHER | ANSI/ASME B18.21.1, DIN127 | 3/8”-4”, M6-M100 |
Oil and Gas:
a wide range of equipment: flowlines, manifolds, risers, pumps, valves, etc.
Pulp and Paper:
digesters, pressure vessels, liquor tanks, etc.
Chemical engineering:
pressure vessels, heat exchangers, condensers, distillation columns, agitators, marine chemical tankers, etc.
Water:
desalination plants, large tanks for water storage, waste water treatment
renewable energy: Biogas tanks
Mobility: tramcars and bus frames, tank trucks, iron ore wagons
Engineering: pumps, valves, fittings, springs, etc.
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