China Nickel Alloy Pipe manufacturer

TOBO ALLOY GROUP

TOBO Alloy Group is a mature, steady and energetic high-tech company, specializing in manufacture of high-temperature alloys and corrosion resistant alloys, such as Hastelloy, Haynes, Monel, Inconel, Incoloy and nickel.

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February 16, 2022

Polished ASTM A179/A790M UNS S31500 Sheet Super Duplex Stainless Steel

Polished ASTM A179/A790M UNS S31500 Sheet Super Duplex Stainless Steel

 

Specs: A179/A179M (UNS S31500) A 25Cr Duplex Stainless Steel

Alloy A179/A179M (UNS S31500) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.

General Properties

 

  • Allo A179/A179M UNS 31500 is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.

 

  • The impact strength is also high. Alloy A179/A179M UNS 31500 is not recommended for applications which require long exposures to temperatures above 570°F because of the risk of a reduction in toughness.

Quick Details

Grade:
Duplex Stainless
Steel
Standard: ASTM, AISI, DIN, EN, JIS Length: 2000-6000mm
Thickness: 0.6-100mm Width: 1500-2000MM Place of Origin:
Shanghai,
China (Mainland)
Brand Name: METAL Model Number: Duplex Steel Type:
Plate, Hot Rolled /
Cold Rolled

Packaging & Delivery

Packaging Details: Standard export seaworthy packing or a required
Delivery Detail: 5-15 days

 

 

 

Standards

  • ASTM/ASME .......... A179/A179M - UNS S31500
  • EURONORM............ 1.4410 - X2 Cr Ni MoN 25.7.4
  • AFNOR.................... Z3 CN 25.06 Az

Applications

  • Pressure vessels, tanks, piping, and heat exchangers in the chemical processing industry
  • Piping, tubing, and heat exchangers for the handling of gas and oil
  • Effluent scrubbing systems
  • Pulp and paper industry digesters, bleaching equipment, and stock-handling systems
  • Rotors, fans, shafts, and press rolls requiring combined strength and corrosion resistance
  • Cargo tanks for ships and trucks
  • Food processing equipment
  • Biofuels plants

Products photo

 

Detailed description of super duplex stainless steel uns 32750 / uns 32760

Chemical composition of super duplex stainless steel uns 32750 / uns 32760


Material Code
  Mass percent(%)
C Si Mn P S Cr Ni Mo N
2101(S32101,1.4162) ASTM ≤0.040 ≤1.00 4.00-6.00 ≤0.040 ≤0.030 21.0-22.0 1.35-1.70 0.1-0.8 0.20-0.25
Typicalvalue 0.028 0.071 5.03 0.028 0.001 21.5 1.55 0.3 0.22
2304(S32304,1.462) ASTM ≤0.030 ≤1.00 ≤2.50 ≤0.040 ≤0.030 21.5-24.5 3.0-5.5 0.05-0.60 0.05-0.20
Typicalvalue 0.026 0.5 1.28 0.028 0.001 23.5 4.05 0.3 0.12

2205
(S31803,S32205,

1.4462)

ASTM a ≤0.030 ≤1.00 ≤2.00 ≤0.030 ≤0.020 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20
ASTM b ≤0.030 ≤1.00 ≤2.00 ≤0.030 ≤0.020 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20
Typicalvalue 0.025 0.55 1.2 0.028 0.001 22.1 5.10 3.10 0.17
2507(S32750,1.4410) ASTM ≤0.030 ≤1.00 ≤1.20 ≤0.035 ≤0.020 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32
Typicalvalue 0.026 0.55 0.78 0.028 0.001 25.5 7.40 4.10 0.28

 

Mechanical Properties of super duplex stainless steel uns 32750 / uns 32760

Material Code   Rp0.2/MPa Rm/MPa A/% HB
2101(S32101,1.4162) ASTM ≥450 ≥620 ≥25 ≤293
Typicalvalue 530 720 33 240
2304(S32304,1.4362) ASTM ≥400 ≥600 ≥25 ≤293
Typicalvalue 520 710 35 245
2205(S31803.
S32205.1.4462)
ASTMa ≥450 ≥620 ≥25 ≤293
ASTMb ≥450 ≥655 ≥25 255
Typicalvalue 550 750 33 ≤293
2507(S32750.1.4410) ASTM ≥550 ≥795 ≥15 260
Typicalvalue 580 850 31 ≤310
 

 

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