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High Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40

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High Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40

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Brand Name : TISCO BAOSTEEL JISCO

Model Number : 420j2

Certification : SGS

Place of Origin : China(mainland)

MOQ : 5 Ton

Price : 1800-2800 USD/Ton

Payment Terms : L/C, T/T, Western Union

Supply Ability : 15000Tons

Delivery Time : 5-10 days

Packaging Details : standard export seaworthy packing or as required

company type : storage company

processing technology : cold rolled

grade : 201 304 304L 316L 321 310S 317L 430 904L.etc

surface : 2B BA NO.4 mirror 8K

standard : GB JIS ASTM AISI EN DIN

tolerance : 0%-5%

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High-Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40

Topics Covered

Introduction
Chemical Composition
Other Designations
Fabrication and Heat Treatment
Machinability
Welding
Annealing
Heat Treatment
Hardening
Applications

Introduction

Stainless steel grade 420J2 is inexpensive and highly corrosion resistant steel. It has good corrosion resistance in mild atmosphere as well as domestic and industrial environments. It is also resistant to dilute nitric acid, carbonic acid, ammonia, crude oil, detergent solutions, vinegar, food acids, several petroleum products, and steam.

Stainless steel grade 420J2 is known to possess good strength and reasonable impact resistant properties in hardened and tempered conditions when compared with 440 grades.

The following sections will discuss in detail about stainless steel grade 420J2.

Chemical Composition

The chemical composition of stainless steel grade 420J2 is outlined in the following table.

Element Content (%)
Chromium, Cr 14
Nickel, Ni (optional) 1
Manganese, Mn 1
Silicon, Si 1
Phosphorus, P 0.04
Carbon, C 0.15-0.36
Sulfur, S 0.03
Iron, Fe Balance

Other Designations

Other designations that are equivalent to stainless steel grade 420J2 include the following.

  • BS970 Part3 1991 420S37
  • BS970 Part4 1970/73 420S45
  • BS970 1955 EN56C
  • ASTM A276-98b 420
  • EN56D
  • AISI 420
  • JIS G4303
  • SUS 420 J1
  • SAE 51420
  • SUS 420 J2

Fabrication and Heat Treatment

Machinability

Stainless steel grade 420J2 is machinable both in hardened and tempered conditions such as turning, drilling, and bending; however it is recommended that machining in hardened condition should be avoided as far as possible.

Welding

Welding of stainless steel grade 420J2 is easy. It is recommended that welding in annealed or hardened and tempered conditions should be avoided as it causes formation of brittleness, resulting in cold cracking due to contraction stresses.

Pre-heating and inter-pass temperature control during welding, followed by very slow cooling and post-weld annealing are good measures to take to prevent cracking.

Annealing

Annealing of this material can be performed by heating uniformly to 840-900°C (1544-1652°F) and held until the temperature is uniform throughout the section. Soaking and cooling is required.

Heat Treatment

Stainless steel grade 420J2 has to be heated uniformly to 730-790°C (1346-1454°F) and held until temperature is uniform throughout the section.

Hardening

Stainless steel grade 420J2 can be hardened by heating 950-1020°C (1742-1868°F) and held until temperature is uniform throughout the section. This should be followed by quenching in oil or air cooling. Tempering should be done when it is slightly warm.

Applications

Stainless steel grade 420J2 is used in the following application areas:

  • Surgical instruments
  • Daggers and swords
  • Budget knives and diving knives
  • Haircutting scissors and domestic scissors


High Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40High Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40High Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40High Strength Stainless Steel Sheet SUS 420J2 INOX Sheet 30Cr13 Sheet Hardess HRC 40


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