• 440C Stainless Steel round bar
  • 440C Stainless Steel forging
  • 440C Stainless Steel sheet
  • 440C Stainless Steel flat bar
  • 440C Stainless Steel pipe
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440C Stainless Steel

We can produce 440C Stainless Steel stainless steel round rods, 440C Stainless Steel forging,sheet,coil,and profiledstrip,Deformed steel,flat steel,mould,steel wire,have all specifications. With DuoNian production experience, strict control 440C Stainless Steel chemical composition and 440C Stainless Steel mechanical properties.From casting, forging, steel to hot and cold rolling process, heat treatment, etc, we have the control of professional engineers. We have advanced precision machining equipment, according to the requirements of users machining. in order to achieve the most satisfied with the user requirements.

Production specification

Round bar steel: 1mm to 3500mm
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
We serve you with our honesty, integrity, and professionality.

440C  1.4125 Stainless Steel  

 

440C is a high carbon chromium stainless steel providing stainless steel properties with optimum hardness after heat treatment. 440C can achieve a hardness of up to 60 Rockwell HRc.  440C stainless resists corrosion in normal domestic environments and very mild industrial enviroments, with optimum cossision resistance of 440C achieved with a temper below about 400°C. For 440C to achieve best cossosion resistance, surfaces must be free of scale, lubricants, foreign particles, and coatings applied for drawing and heading.  With its high carbon content 440C annealed stainless machines similar to a high speed steel annealed grade

 

 

Typical Analysis

 

 

 

 

 

C.

Mn.

P.

S.

Si.

Cr.

Mo.

0.95-

1.00%

0.04%

0.03%

1.00%

16.00-

0.75%

1.20%

max.

max.

min.

max.

18.00%

max.

 

Annealing
To achieve full anealing of 440B heat uniformly to 840 to 875°C. Soak and cool very slowly in the furnace.

Hardening
To heat treat 440B heat to 1010 to 1070°C, fully soak and quench in warm oil or cool in air. Be carefull not to overheat 440C or full hardness will not be obtained.

Tempering
When tempering 440C a Rockwell hardness of 60HRc can be obtained. Temper for at least one hour.

 

Tempering °C

300

400

500

600

700

HRc

60

59

57

56

56

 

Mechanical Properties at Room Temperature
(440C hardened at 1040°C, oil quenched and tempered at 300°C)

 

 

 Tensile (UTS)

 

1965 N/mm²

 0.2% Yield Strength

 

1896 N/mm²

 Elongation (50.8mm)

 

2% min

 Hardness

 

59HRc

 Reduction of Area

 

10

 

 

 Cr Alloy Martensitic Stainless Steel Specifications 440C UNS S44004 AISI 440C  ASTM A276 1.4125

Mechanical properties

440C Stainless Steel Mechanical properties,Our production completely according to the 440C Stainless Steel standards to meet the 440C Stainless Steel mechanical performance, can also according to the customer request, to meet the requirements of customers of 440C Stainless Steel mechanical properties.

Heat treatment

440C Stainless Steel Heat treatment,Our production completely according to the 440C Stainless Steel standards to meet the 440C Stainless Steel Heat treatment, can also according to the customer request, to meet the requirements of customers of 440C Stainless Steel Heat treatment.

Machining

440C Stainless Steel Machining,Our production completely according to the 440C Stainless Steel standards to meet the 440C Stainless Steel Machining, can also according to the customer request, to meet the requirements of customers of 440C Stainless Steel Machining.

Welding performance

440C Stainless Steel Welding performance,Our production completely according to the 440C Stainless Steel standards to meet the 440C Stainless Steel Welding performance, can also according to the customer request, to meet the requirements of customers of 440C Stainless Steel Welding performance.

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