Products

Supreme Special Steels specializes in the manufacturing of exotic alloys mainly in the form of round bars & square bars in the size range of 25 to 110mm diameter. For special applications like forging, re-melting & ring-rolling we can also supply ESR billets up to 350mm diameter.

Duplex Stainless Steels

Duplex Stainless Steels are replacing the conventional stainless steels due to higher strength and corrosion resistant properties. The balance of ferrite and austenite in the steels helps to achieve both the properties of corrosion resistance along with high mechanical properties. These steels are exceptional in offshore & sour oil & gas applications. They are also replacing stainless steels in chemical, waste, salt water, marine and pulp & paper industries.

Super-Duplex Stainless Steels

Super-Duplex is by definition a duplex stainless steel with a Pitting Resistance Equivalent Number (PREN) > 40. Usually super duplex grades have 25% chromium or more.

Super-Austenitic Stainless Steels

Super-Austenitic Stainless Steel has a corrosion resistance higher than the duplex grades because its alloy content is higher. It has a high PREN (pitting resistance equivalency number) for superior resistance to chloride pitting and stress corrosion cracking.

Nickel-based Superalloys

Nickel-Based Super Alloys have additional advantages for high temperature applications and hence are popularly used as bolting material, trim parts in valve application, and various aerospace, oil & gas and petroleum applications. These grades help in life-cycle improvement and usually have corrosion resistant properties even better than Duplex & Super-Duplex Stainless Steels.

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Duplex Stainless Steels - 329

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4460, ASTM A182, A276, A479, UNS S32900 0.08 max 0.75 max 1.00 max 0.03 max 0.04 max 23-28 1.0-2.0  - 2.0-5.0 - - 269 BHN 7.8 725 Mpa 550 Mpa 25%        

Duplex Stainless Steels - F51

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4462, ASTM A182, A276, A479, UNS S31803 0.030 max 1.00 max 2.00 max 0.020 max 0.030 max 21.0-23.0 2.5-3.5 - 4.5-6.5 0.08-0.20 - 270 BHN 7.8 620 Mpa 450 25% 45%      

Duplex Stainless Steels - F60

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4462, ASTM A182, A276, A479, UNS S32205 0.030 max 1.00 max 2.00 max 0.020 max 0.030 max 21.0-23.0 3.0 - 3.5 - 4.5-6.5 0.14-0.20 - 270 BHN 7.8 620 Mpa 450 25% 45%      

Super-duplex Stainless Steels - Alloy 2304

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4362, ASTM A182, A276, A479, UNS S32304 0.030 max 1.00 max 2.50 max 0.030 max 0.040 max 21.4-24.5 0.05-0.60 0.05-0.60 3-5.5 0.05-0.20 - 270 BHN 7.8 600 Mpa 400 Mpa 25%        

Super-duplex Stainless Steels - Alloy F255

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4507, ASTM A182, A276, A479, UNS S32550 0.040 max 1.00 max 1.50 max 0.030 max 0.040 max 24.0-27.0 2.9-3.9 1.5-2.5 4.5-6.5 0.10-0.25 - 270 BHN 7.8 750 Mpa 550 Mpa 25%        

Super-duplex Stainless Steels - F53

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4410, ASTM A182, A276, A479, UNS S32750 0.030 max 0.8 max 1.2 max 0.02 0.035 max 24.0- 26.0 3.0 - 5.0 0.50 max 6.0-8.0 0.20-0.30 - 310 BHN 7.8 800 Mpa 550 15%        

Super-duplex Stainless Steels - F55

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Phosphorous % Chromium % Molybdenum % Copper % Nickel % Nitrogen % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
1.4501, ASTM A182, A276, A479, UNS S32760 0.030 max 1.00 max 1.00 max 0.01 0.030 max 24.0- 26.0 3.0 - 4.0 0.50-1.00 6.0-8.0 0.20-0.30 0.50-1.00 310 BHN 7.81 750 Mpa 550 25% 45%      

Super-austenitic Stainless Steels - Alloy 20

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B729, B464, B366, B463, B473, B462; ASME SB729, SB464, SB366, SB473, SB462; ANSI / ASTM A555-79; EN 2.4660; UNS N08020; Werkstoff 2.4660 0.07 1.00 max 2.00 max 0.035 max 19.0 - 21.0 2.0 - 3.0 3.00 - 4.00 32.0 - 38.0   217 BHN 8.08 551 Mpa 241 30%        

Super-austenitic Stainless Steels - Alloy 825

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B425, B564 0.05 Max 0.05 Max 1.00 Max 0.030 Max 19.5-23.5 2.5-3.5 1.5-3.0 38.0-46.0 - 180 BHN 8.14 690 Mpa 310 Mpa 45%        

Super-austenitic Stainless Steels - 904 L

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B677, B366, ASME SB677, SB366 0.02 1.00 max 2.00 max 0.035 max 19.0 - 23.0 4.0 - 5.0 1.00 - 2.00 23.0 - 28.0 - 230 BHN 8 490Mpa 220 50% 55%      

Super-austenitic Stainless Steels - Alloy 25-6 M0

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM A 240, A 480, B 366, B 472, B 625, B 649, B 673, B 674, B 677, B 751, B 775, B 804, B 829; W. Nr. 1.4529 0.02 0.50 Max 2.00 Max 0.010 Max 19.0 -21.0 6.0 - 7.0 0.50 - 1.50 24.0 - 26.0 - 295 BHN 8.03 690 Mpa 330 Mpa 42%        

Super-austenitic Stainless Steels - Alloy 254 SMO

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM A 276, A 479 ;  ASME SA-479; 0.02 0.8 1 0.01 20 6.1 0.7 18 - 210 BHN 8 650 Mpa 300 Mpa 35% 50%      

Super-austenitic Stainless Steels - XM-19

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM A193 ASTM A194 ASTM A276 ASTM A479 AMS 5764 0.06 1.00 Max 4.0 - 6.0 0.030 Max 20.5 - 23.5 1.5- 3.0 - 11.5- 13.5 - 293 BHN 7.8 690 Mpa 380 35% 55%      

Nickel-based Superalloys - Alloy C-276

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B574, Din 17752 0.01 Max 0.08 Max 1.00 Max 0.030 Max 14.5 - 16.5 15.0 - 17.0 - 55 3.0-4.5 252 BHN 8.89 758 Mpa 363 Mpa 62%        

Nickel-based Superalloys - Alloy 600

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B166, AMS 5665, Din 17752 0.15 0.5 1 0.015 14.0 - 17.0 - 0.5 72.0 Min - 210 BHN 8.47 655 Mpa 310 Mpa 40%        

Nickel-based Superalloys - Alloy 718

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B637, AMS 5662, AMS 5663, AMS 5664, PWA 1009, PWA 1010, GE B50TF15 0.08 Max 0.35 Max 0.35 Max 0.015 Max. 17-21 2.8-3.3 0.30 Max 50-55 - 331 BHN 8.19 1275 Mpa 1034 Mpa 12% 15%      

Nickel-based Superalloys - Alloy 625

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B446, AMS 5666 BS3076 0.10 Max 0.50 Max 0.50 Max 0.015 Max. 20-22 8-10 - 58 Min - 220 BHN 8.44 905 Mpa 490 Mpa 50%        

Nickel-based Superalloys - Alloy 400

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B164 QQ-N-281 Din 17750 0.3 Max 0.5 Max 2.0 Max 0.024 Max - - 28.0-34.0 63 - 120 BHN 8.8 480 Mpa 170 Mpa 35%        

Nickel-based Superalloys - Alloy K-500

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B865 QQ-N-286 0.25 Max 0.50 Max 1.50 Max 0.010 Max - - 30 63 - 265 BHN 8.44 965 Mpa 690 Mpa 20%        

Nickel-based Superalloys - Alloy A286

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM A 638, ASME SA 638 0.08 Max 1.00 Max 2.00 Max 0.030 Max 13.50 - 16.00 1.00 - 1.75 - 25.5 - 180 BHN 7.94 620 Mpa 275 Mpa 40%      

Nickel-based Superalloys - Alloy 800

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B408, ASTM B564 0.1 Max 1.00 Max 1.50 Max 0.015 Max 19.0-23.0 - - 30.0-35.0 - 180 BHN 7.94 550 Mpa 240 Mpa 30%        

Nickel-based Superalloys - Alloy 36

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM B 388 & B 753, DIN 1715 , SEW 385 0.1 0.35 0.6 0.025 0.5 0.5 - 35.0-38.0 P-0.025 140 BHN 8.11 490 Mpa 240 Mpa 42%        

Nickel-based Superalloys - Alloy 42

Applicable Standards Carbon %  Silicon % Manganese % Sulphur % Chromium % Molybdenum % Copper % Nickel % Tungsten % Hardness (BHN) Density U.T.S. (N/MM2) Yeild Strength  (Mpa) Elongation Reduction Area Impact (Room Temperature) Impact (0◦ C) Impact (- __◦ C)
ASTM F 30, SEW 385,  0.05 0.3 0.8 0.025 0.25 - - 42 P-0.025 130 BHN 8.05 520 Mpa 340 Mpa 42%