Super Duplex & Duplex Stainless Steel
Super Duplex & Duplex
What is duplex stainless steel?
Duplex stainless steel is stainless steel with excellent strength and corrosion resistance, having dual-phase structure of ferrite phase and austenite.
Duplex stainless steel is widely used in the pumps, valves, centrifugal separators, floodgates, nuts, bolts, and other components of chemical and petroleum plants, seawater filtration and desalination systems, energy plants, and more.
We specialize in super duplex S32760 steel—which is difficult to obtain, even in Japan—and stock and sell peeled (Condition-A) and cold drawn (Condition-S) bars.
■ Sale from inventory (in stock)
Super duplex stainless steel
ASTM A276 UNS S32760 SuperDuplex
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo | N | Cu | W |
|---|---|---|---|---|---|---|---|---|---|---|---|
| S32760 |
≦ 0.03 |
≦ 1.00 |
≦ 1.00 |
≦ 0.04 |
≦ 0.02 |
6.0- 8.0 |
24.0- 26.0 |
3.0- 4.0 |
0.20- 0.30 |
0.5- 1.0 |
0.5- 1.0 |
|
Shape |
Peeled round bar, cold drawn round bar * Hexagonal bars can also be drawn |
|---|---|
|
Dimensions |
11.00–61.31 mm |
■ Order sale
Duplex and super duplex stainless steel
Please inquire about SUS329J3L, SUS329J4L, S31803, S32205, S32750, and any others you wish to purchase.
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| SUS329J3L |
≦ 0.03 |
≦ 1.00 |
≦ 2.00 |
≦ 0.04 |
≦ 0.03 |
4.5- 6.5 |
21.0- 24.0 |
2.5- 3.5 |
0.08- 0.20 |
|
| SUS329J4L |
≦ 0.03 |
≦ 1.00 |
≦ 1.50 |
≦ 0.04 |
≦ 0.03 |
5.5- 7.5 |
24.0- 26.0 |
2.5- 3.5 |
0.08- 0.20 |
|
| S31803 |
≦ 0.03 |
≦ 1.00 |
≦ 2.00 |
≦ 0.04 |
≦ 0.03 |
4.5- 6.5 |
21.0- 24.0 |
2.5- 3.5 |
0.08- 0.20 |
|
| S32205 |
≦ 0.03 |
≦ 1.00 |
≦ 2.00 |
≦ 0.030 |
≦ 0.02 |
4.5- 6.5 |
22.0- 23.0 |
3.0- 3.5 |
0.14- 0.20 |
|
| S32750 |
≦ 0.03 |
≦ 0.80 |
≦ 1.20 |
≦ 0.035 |
≦ 0.02 |
6.0- 8.0 |
24.0- 26.0 |
3.0- 5.0 |
0.24- 0.32 |
≦ 0.5 |
|
Shape |
Peeled round bar, cold drawn round bar * Hexagonal bars can also be drawn |
|---|---|
|
Dimensions |
11.00–80.00 mm |
■ Sale after processing
Our drawing technology allows us to manufacture shapes (e.g. round bars, hexagonal bars, flat/square bars) and dimensions even more precise than those listed above, and we can also control mechanical properties (e.g. produce high-strength materials) to improve material safety and reliability in addition to helping reduce material costs in line with customers’ needs.
Stainless steel for use with high-pressure hydrogen
SUS316, SUS316L
We supply, sell, and process safe, reliable, highly waterproof materials to help realize a hydrogen-based society (e.g. developing hydrogen station infrastructure, popularizing fuel cell vehicles (FCVs)).
■ Sale from inventory
|
Type |
|
|---|---|
|
Shape |
Round bar (JIS G4303) |
|
Dimensions |
16.00–200.00 mm |
We deliver small lots of the materials listed above—which satisfy the given standards for the Regulation on Safety of General High Pressure Gas—with quick turnaround.
■ Sale after processing
Our drawing technology allows us to manufacture shapes (e.g. round bars, hexagonal bars, flat/square bars) and dimensions even more precise than those listed above, and we can also control mechanical properties (e.g. produce high-strength materials) to improve material safety and reliability in addition to helping reduce material costs in line with customers’ needs.
Stainless steel for use with high-pressure hydrogen catalog (PDF)
Heat-resistant stainless steel
ASTM A453 A286 (Gr.660)
Heat-resistant stainless steel is precipitation hardening stainless steel with outstanding high-temperature strength (up to 700°C).
Highly evaluated as a heat-resistant fastener. It is widely used as a high-strength heat-resistant steel, and is applied to high-quality components such as fasteners for oil plants and chemical plants, aircraft engines, and industrial turbines.
We specialize in Grade 660 (A286), which is often used for oil plants and is difficult to obtain even in Japan. Sale from inventory.
■ Sale from inventory
Heat-resistant stainless steel
ASTM A453 660(A286) Class-D
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo | Al | Ti | B | V | Co |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 660-D |
≦ 0.08 |
≦ 1.00 |
≦ 2.00 |
≦ 0.04 |
≦ 0.03 |
24.0- 27.0 |
13.5- 16.0 |
1.0- 1.5 |
≦ 0.35 |
1.90- 2.35 |
0.003- 0.010 |
0.1- 0.5 |
≦ 0.03 |
| Heat treatment conditions | Solution treatment |
|---|---|
|
1650±25°F (900±14°C), hold 2h min, and liquid quench or 1800±25°F (980±14°C), hold 1h min, and liquid quench |
|
| Aging treatment | |
|
325±25°F (720±14°C), hold 16h, air cool If necessary to achieve properties, second age. 1200±25°F (850±14°C), hold 16h, air cool |
|
Shape |
Peeled round bar * Hexagonal bars can also be drawn |
|---|---|
|
Dimensions |
11.00–80.00 mm |
■ Order sale
In addition to the grades listed above, 660-A, 660-B, and 660-C can be ordered depending on the heat treatment conditions. Please contact us if you are interested.
| Grade | Heat treatment conditions |
|---|---|
| 660-A |
1650±25°F (900±14°C), hold 2h min, and liquid quench 1325±25°F (720±14°C), hold 16h, air cool |
| 660-B |
1800±25°F (980±14°C), hold 1h min, and liquid quench 1325±25°F (720±14°C), hold 16h, air cool |
| 660-C |
1800±25°F (900±14°C), hold 1h min, and oil quench 1425±25°F (775±14°C), hold 16h, air cool 1200±25°F (660±14°C), hold 16h, air cool |
■ Sale after processing
Our drawing technology allows us to manufacture shapes (e.g. round bars, hexagonal bars, flat/square bars) and dimensions even more precise than those listed above, and we can also control mechanical properties (e.g. produce high-strength materials) to improve material safety and reliability in addition to helping reduce material costs in line with customers’ needs.
Click here for inquiries about the products described above.