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AISI 440C Stainless Steel Coil Strip 15 X 0,61 Mm For Fruit Knife Blades

JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
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AISI 440C Stainless Steel Coil Strip 15 X 0,61 Mm For Fruit Knife Blades

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Brand Name : MITTEL TISCO BAO STEEL

Model Number : 440C

Certification : SGS ISO MTC

Place of Origin : China

MOQ : 300KGS

Price : 2.5 USD/KG

Payment Terms : L/C, T/T

Supply Ability : 50000KGS

Delivery Time : 7 Days

Packaging Details : Wooden Box

Length : Customer's Request,in coil,500-12000MM

Grade : 400 Series 440C

Application : Construction,Kitchenware,Medical instruments,Industry

Type : Cold Rolled Coil

Standard : ASTM,AISI,JIS,DIN

Width : 10mm-1250mm

Surface : 2B

Technique : Cold Rolled

Thickness : 0.15-3.0mm

Edge : Mill Edge Slit Edge

Price term : CIF CFR FOB EX-WORK

Special use : Stainless steel

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AISI 440C Stainless Steel Coil Strip 15 x 0,61 mm Used For Fruit Knife Blades

GENERAL PROPERTIES

Stainless steels are high-alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels. They are a combination of martensitic and austenitic steels.

Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440C particularly suited to such applications as ball bearings and valve parts.

APPLICATIONS

Typical applications include:

  • Rolling element bearings
  • Valve seats
  • High quality knife blades
  • Surgical instruments
  • Chisels

SPECIFICATIONS

UNS: ASTM/ASTE S44000

DIN: 1.4125

CORROSION RESISTANCE

Good resistance to the atmosphere, fresh water, foods, alkalies and mild acids. Best resistance in the hardened and tempered and passivated condition. A smooth polished surface also assists.

The corrosion resistance of grade 440C approximates that of grade 304 in many environments.

HEAT RESISTANCE

Not recommended for use in temperatures above the relevant tempering temperature, because of reduction in mechanical properties by over-tempering.

HEAT TREATMENT

Annealing – Full anneal – 850-900°C, slow furnace cool to about 600°C and then air cool. Sub-critical Annealing – 735-785°C and slow furnace cool.

Hardening – Heat to 1010-1065°C, followed by quenching in warm oil or air. Oil quenching is necessary for heavy sections. Immediately temper at 150-370°C to obtain a wide variety of hardness values and mechanical properties as indicated in the accompanying table.

Tempering in the range 425-565°C is to be avoided because of reduced impact resistance and corrosion resistance. Tempering in the range 590-675°C results in lower hardness (the product become machinable) and high impact resistance.

WELDING

If welding is necessary pre-heat at 250°C and follow welding with a full anneal. Grade 420 filler will give a high hardness weld (although not as high as the 440C), but 309 or 310 will produce soft welds with higher ductility.

MACHINING

In the annealed condition this grade is relatively easily machined; approximately the same as for high speed steel. Chips are tough and stringy so chip breakers are important. If these grades are hardened machining becomes more difficult and probably impossible.

Compostion

Grade C Mn Si P S Cr Mo Ni N
440C min.
max.
0.95
1.20
-
1
-
1
-
0.04
-
0.030
16.00
18.00
-
0.75
- -

Mechanical Properties

Tempering Temperature (°C) Tensile Strength (MPa) Yield Strength 0.2% Proof (MPa) Elongation (% in 50mm) Hardness Rockwell (HR C) Impact Charpy V (J)
Annealed* 758 448 14 269HB max# -
204 2030 1900 4 59 9
260 1960 1830 4 57 9
316 1860 1740 4 56 9
371 1790 1660 4 56 9
* Annealed properties are typical for Condition A of ASTM A276# Brinell Hardness is ASTM A276 specified maximum for annealed 440A, B and C.

Physical Properties

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (mm/m/°C) Thermal Conductivity(W/m.K) Specific Heat
0-100°C (J/kg.K) Electrical Resistivity (nW.m)
0-100°C 0-200°C 0-600°C at 100°C at 500°C
440 C 7650 200 10.1 10.3 11.7 24.2 -

AISI 440C Stainless Steel Coil Strip 15 X 0,61 Mm For Fruit Knife BladesAISI 440C Stainless Steel Coil Strip 15 X 0,61 Mm For Fruit Knife BladesAISI 440C Stainless Steel Coil Strip 15 X 0,61 Mm For Fruit Knife Blades


Product Tags:

Fruit Blades Stainless Steel Coil Strip

      

AISI 440C Stainless Steel Coil

      

10mm Stainless Steel Coil Strip

      
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