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420 Stainless Steel Plate - AMS 5506

Type 420 is high carbon, martensitic stainless steel.  This material provides full corrosion resistance only in a hardened condition.  Grade 420 has the highest hardness among all the stainless steel grades with 12% chromium.  It can also be hardened through heat treatment.  In this instance, the material is heated to a minimum of 1472° F then quenched and cooled.  Under harneded conditions, 420 steels are resistant to mild acids and alkalis and good resistance against food, making them an ideal fit for cutlery and dental equipment.

420 is magnetic in both the annealed and hardened conditions.  It is ideal for a more polished finish and is often used in dental and surgical instruments. Many of these instruments can last from 15-30 years.  AISI 420 material is also used in automotive trim and exhaust systems, hot water tanks, and heat exchane tubing, ornamental home designs and electrical appliances.

Standard Inventory Specifications

  • UNS S42000
  • AMS 5506
  • ASTM A 176

Common Applications of 420 Stainless Steel Plate

  • Surgical instruments
  • Dental instruments
  • Cutlery
  • Hand tools, straight edges
  • Scissors, scalpels, needles and retractors
  • Appliances
  • Power generation
  • Chemical processing
  • Construction

Inventory Size Range

  • Plate : 0.4375" - 2.000"

Please contact us for more details.

The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.

Carbon 0.15 min  
Manganese   1.00 max
Silicon   1.00 max
Phosphorus   0.040 max
Sulfur   0.030 mx
Chromium 12.0 min 14.0 max
Density kg/mᶟ 7750
Thermal Conductivity at 100°C 24.9
Electrical Resistivity 550
Elastic Modulus (Gpa) 200
Annealed ASTM A276
Yield Strength 0.2% Proof (Mpa) 345
Tensile Strength (Mpa) 655
Elongation (% in 50mm) 25
Hardness (HB) 241 max

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