Stainless 420 Product Guide

Applications | Specifications | Mechanical and Chemical Data | Tolerances

Overview

Stainless 420 possesses similar qualities to the 420 grade, but provides improved hardness and strength when heat treated. Best suited for applications that require mild corrosion resistance, heat resistance, and excellent strength. Typically used in shear blades, needle valves, surgical equipment, cutlery, bearings, bushings, fasteners, screens, mine ladder rungs, pumps shafts, valve components, turbines, steam and gas applications.

Common Trade Names

UNS S42000, AISI 420, Alloy 420, Ruetom Special 420 SS, martensitic stainless steel

Other Resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

Products

Purchase Rectangle Bar 420 | Round Bar 420 | Square Bar 420

Applications

Shear Blades
Needle Valves
Surgical Equipment
Cutlery
Bearings
Bushings
Fasteners
Screens
Ladder Rungs
Pump Shafts
Valve Components
Turbines
Steam/Gas Applications

Stainless 420 Specifications

ASTM	AMS
A176	5506


Physical Properties 420
Density	0.282 lb/in3
Ultimate Tensile Strength	100 ksi
Yield Tensile Strength	55 ksi
Shear Modulus	11,000 ksi
Shear Strength	61 ksi
Fatigue Strength	33 ksi
Hardness Rockwell \| Brinell	B92 \| 195
Elongation at Break Percentage	15%
Reduction of Area	55%
Modulus of Elasticity	28,000 ksi
Poisson's Ratio	0.28
Machinability Percentage	50%
Melting Point	2,640-2,750 °F
Specific Heat	1.1 x 10^-1 BTU/lb-°F
Thermal Conductivity	192 BTU-in/hr-ft^2-°F
Electrical Conductivity	3.0% IACS

Chemistry Information
Element	Percentage
C	0.46
Mn	0.4
Si	0.4
Fe	85.44
Cr	13
V	0.3

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