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Special Steel, S80

S80 is a stainless steel modified by the addition of nickel specifically designed to give high mechanical properties and good corrosion resistance. The material is commonly used for valve parts, centrifuge bowls, chemical equipment, bolts and screws in the aerospace, defence and high technology markets.

 
Chemical Composition (Weight %)
  C Si  Mn P S Cr Mo Ni Co  Cu  Nb  Sn  Ti  V  W  Fe
Min 0.12 1.00  

15.00    2.00                
Max 0.20 1.00 1.00 0.03 0.025 18.00 0.30 3.00 0.05 0.30 0.05 0.02 0.05 0.20 0.05 Bal

Typical Mechanical Properties (Min unless stated)
Condition  Tensile Strength, Mpa Yield Strength 0.2%, Mpa  Elongation % Reduction of Area % Hardness HB Impact izod ft. ibf
S80A Soft Forging

 
277 max
 S80B Forged 880-1080 690 12
255-321 15
 S80C Forged 880-1080 690 12
255-321 15
 S80D Forged 880-1080 690 12
255-321 15
 S80E Forged



277 max
 

Related Specifications

AISI 431, UNS 43100, ASTM A276, AMS5628, Mil-S-86213, 1.4057, BS S80

Available Forms 

Round bar, flat bar, forgings, machined components 
 
Chemical Composition (Weight %)
  Min Max
C 0.12 0.20
Si 1.00 1.00
Mn   1.00
P   0.03
S   0.025
Cr 15.00 18.00
Mo   0.30
Ni 2.00 3.00
Co   0.05
Cu   0.30
Nb 0.12 0.20
Sn   0.02
Ti   0.05
V   0.20
W   0.05
Fe   Bal

Typical Mechanical Properties (Min unless stated)
S80A Soft Forging
Tensile Strength, Mpa  
Yield Strength 0.2%, Mpa  
 Elongation %  
Reduction of Area %  
Hardness HB 277 max
Impact izod ft. ibf  
 S80B Forged
Tensile Strength, Mpa 880-1080
Yield Strength 0.2%, Mpa 690
 Elongation % 12
Reduction of Area %  
Hardness HB 255-321
Impact izod ft. ibf 15
 S80C Forged
Tensile Strength, Mpa 880-1080
Yield Strength 0.2%, Mpa 690
 Elongation % 12
Reduction of Area %  
Hardness HB 255-321
Impact izod ft. ibf 15
 S80D Forged
Tensile Strength, Mpa 880-1080
Yield Strength 0.2%, Mpa 690
 Elongation % 12
Reduction of Area %  
Hardness HB 255-321
Impact izod ft. ibf 15
 S80E Forged
Tensile Strength, Mpa  
Yield Strength 0.2%, Mpa  
 Elongation %  
Reduction of Area %  
Hardness HB 277 max
Impact izod ft. ibf  
 

Related Specifications

AISI 431, UNS 43100, ASTM A276, AMS5628, Mil-S-86213, 1.4057, BS S80

Available Forms 

Round bar, flat bar, forgings, machined components