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Friday 28 February 2020
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet
  • 420 Stainless Steel Data Sheet

Alloy

UNS Number

SAE Number

420

 UNS42000

 

GENERAL PROPERTIES

Type 420 is a martensitic stainless steel that provides good corrosion resistance similar to 410 plus increased strength and hardness. It is magnetic in both the annealed and hardened conditions. Maximum corrosion resistance is attained only in the fully hardened condition. It is never used in the annealed condition.

 

RESISTANCE TO CORROSION

Type 420 provides full corrosion resistance only in the hardened or hardened and tempered. In these conditions, its corrosion resistance is similar to type 410.

 

PHYSICAL PROPERTIES

Melting Point

Density

Specific Gravity

Modulus of Elasticity
in Tension

 1450 - 1510 ℃

  7.75g/cm3

7.7

200 GPa

MECHANICAL PROPERTIES

Alloy

Tensile Strength
Minimum
(psi)

Yield Strength
Minimum 0.2% offset

(psi)

% Elongation
in 2" Minimum

       
       

420 Annealed *

665

345

25

CHEMICAL PROPERTIES

Alloy

C

Si

Mn

P

S

Cr

Ni

Mo

Cu

Al

Sn

Fe

420

0.15

1.00

1.00

0.04

0.03

12-14

0.50

0.50

0.50

0.15

0.050

Bal

WELDING

Not commonly welded due to its air hardening characteristics. Welding may be performed after preheating to 300-400 F (149-204 C) with post weld tempering at temperature for 2 hours. Filler metal should be AWS E/ER420.

 

HEAT TREATMENT

Annealing – Grade 420 stainless steels can be heated at temperatures from 840 to 900°C, followed by slow furnace cooling at 600°C and then air-cooling. Process Anneal – Grade 420 can be annealed at 735 to 785°C and air-cooled.

Contact Us

 

contact phoneT: + 44 (0)1902 409316
Fusion House
The Crescent
Willenhall
West Midlands
WV13 2QR

F: + 44 (0)1902 409304
E: sales@quest4alloys.com