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Duplex 2507 is an exceptionally duplex treated steel proposed for applications which solicitation phenomenal quality and utilization restriction. Composite 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen substance achieves splendid security from chloride setting and gap utilization attack and the duplex structure outfits 2507 with exceptional assurance from chloride stress disintegration parting.
Utilization of Duplex 2507 should be obliged to applications underneath 600° F (316° C). Extended raised temperature introduction can diminish both the sturdiness and utilization deterrent of composite 2507.
Duplex 2507 has sensational mechanical properties. Consistently a light proportion of 2507 material can be used to achieve a comparative arrangement nature of a thicker nickel composite. The consequent save assets in weight can fundamentally decrease the general cost of creation.
UNS S32750, for the most part known as Super Duplex 2507®, is in a general sense equivalent to UNS S31803 Duplex. The differentiation between the two is the substance of chromium and nitrogen are higher in the Super Duplex Grade which hence makes higher disintegration resistance similarly as an increasingly drawn out future. Duplex is made out of between 24% to 26% chromium, 6% to 8% nickel, 3% molybdenum, and 1.2% manganese, with the equality being iron. Similarly found in Super Duplex are pursue proportions of carbon, phosphorus, sulfur, silicon, nitrogen, and copper.
Favorable circumstances include: extraordinary weldability and handiness, a critical degree of warm conductivity and low coefficient of warm expansion, high assurance from utilization, exhaustion, high security from setting and gap disintegration, high insurance from stress utilization parting (especially chloride stress utilization breaking), high imperativeness ingestion, high caliber, and deterioration. Essentially, the Duplex mixes are an exchange off; having a bit of the ferritic stress disintegration parting deterrent and a critical piece of the transcendent formability of the customary austenitic perfect amalgams, more cost satisfactorily than the high nickel composites.
Specifications | : | ASTM A276, ASME SA276 |
Dimensions | : | EN, DIN, JIS, ASTM, BS, ASME, AISI |
Size |
: | 6 mm to 120 mm. |
Diameter |
: | 6mm to 350mm Diameter |
Thickness | : | 100 to 6000 mm Length |
Tolerance |
: | +/-0.2mm |
Finish | : | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
Length | : | 1 to 6 Meters, Custom Cut Lengths |
Form | : | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
Cr | Ni | Mo | C | N | Mn | Si | Cu | P | S | Fe |
---|---|---|---|---|---|---|---|---|---|---|
24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.030 Max | .24-.32 | 1.20 Max | 0.80 Max | 0.50 Max | 0.035 Max | 0.020 Max | Balance |
Interval Temper °C |
Thermal expansion ax10M-bK-1 |
°C |
Resistivity (μ_ cm) |
Thermal conductivity (W.m-1.K-1) |
Specific heat (J.kg-1.K-1 |
Young modulus E (GPa) |
Shear modulus G (GPa) |
---|---|---|---|---|---|---|---|
20-100 | 13 | 20 | 80 | 17 | 450 | 200 | 75 |
20-100 | 13 | 100 | 92 | 18 | 500 | 190 | 73 |
20-200 | 13.5 | 200 | 100 | 19 | 530 | 180 | 70 |
20-300 | 14 | 300 | 105 | 20 | 560 | 170 | 67 |
Element | Value |
---|---|
0.2% Offset Yield Strength, ksi | 80 min. |
Ultimate Tensile Strength, ksi | 116 min. |
1% Offset Yield Strength, ksi | 91 min. |
Elongation in 2 inches, % | 15 min. |
Hardness, Rockwell C | 32 max |
Impact Energy, ft-lbs | 74 min. |