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Quick Details

  • Grade: 400 Series
  • Standard: JIS
  • Length: in coils
  • Thickness: 0.1 - 6.0mm
  • Width: 250mm
  • Place of Origin: Jiangsu, China (Mainland)
  • Brand Name: Changjiang
  • Model Number: JIS SUS440A
  • Type: Plate
  • Application: Cutlery and scissors...
  • Certification: SGS

Packaging & Delivery

Packaging Details Seaworthy packing
Delivery Time 15-45 workings days after receipt the 30% advanced payment

440A STAINLESS STEEL

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Specifications

  GB:7Cr17Mo       AISI:440A     EN:1.4109      DIN: X70CrMo15       JIS:SUS 440A

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Applications  : Cutlery and scissors.

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Description

 

Type 440A is a straight chromium martensitic stainless steel which combine the superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels.. It is magnetic in both the annealed and hardened conditions. Maximum corrosion resistance is attained only in the fully hardened condition.

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Chemistry Typical

Carbon         Manganese     Phosphorus     Sulfur         Silicon      Chromium      Molybdenum

0.60 - 0.75     1.00 max          0.04 max         0.03 max   1.00 max   16.00 - 18.00   0.75 max

Iron: Balance

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Physical Properties

Density, 0.280 lbs/in³, 7.74 g/cm³

Electrical Resistivity, microhm-in (microhm-cm): 68°F (20°C): 23.7 (60.0)

Specific Heat, BTU/lb/°F (kJ/kg•K): 32-212°F (0-100°C): 0.11 (0.46)

Thermal Conductivity, BTU/hr/ft²/ft/°F (W/m•K): At 212°F (100°C): 14.0 (24.2)

Mean Coefficient of Thermal Expansion, in/in/°F,(μm/m•K): 32 – 212°F (0 -100°C): 5.7 x 10-6(10.2) 32 – 1200°F (0 -649°C): 6.8 x 10-6(12.1)

Modulus of Elasticity, ksi (MPa) 29.0 x 10³ (200 x 10³) in tension

Magnetic Permeability: Magnetic

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Forms

 

Coil – Strip, Foil, Ribbon Wire – Profile, Round, Flat, Square

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Tempered

440A can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information

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Corrosion Resistance

 

Type 440A provides full corrosion resistance only in the hardened or hardened and stress-relieved conditions. Type 440A has good corrosion resistance to atmosphere, fresh water, foods, alkalies and mild acids.

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Cold Forming

 

Type 440A has limited formability in the annealed condition

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Heat Treatment Hardening

Type 440A can be hardened cold working and by heat treatment. Contact Ulbrich Technical Service for additional information

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We are looking forward to your enquiries.
Please call +86 151 9025 7143, skype: paul_luhongxiang
or send an email to export@ahoneststeel dot com

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