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440c Martensitic Stainless Steel

440C, also known as 1.4125 and 4125, is a high-carbon martensitic stainless steel. Martensitic stainless steels are optimised for high hardness. In the hardened condition this material has a martensite + carbide structure. It is capable of attaining, after heat treatment, the highest strength, it can achieve a hardness of up to 60 Rockwell HRc and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which makes

Applications

It has good resistance to the atmosphere, fresh water, foods, alkalies and acids. 440C corrosion resistance is approximately the same as grade 304 in many environments. 440C stainless steel is used in a range of industries including bearing manufacture, rollers and valve parts, food applications, aerospace applications, surgical instruments, cutlery, etc.

440c Size Range (Ex-Stock):

Forged/Rolled, Annealed, Machined bars in 3-4 metre lengths (Cut to length if required).


Diameter Metric Diameter Imperial Tolerance
6.40mm 0.252" h9
8.00mm 0.315" h9
10.00mm 0.394" k9
13mm 0.512" k11
16mm 0.630" k11
20mm 0.787" k11
23mm 0.906" k11
25.6mm 1.008" k11
26.5mm 1.043" k11
29mm 1.142" k11
32mm 1.260" k11
35mm 1.378" k11
38mm 1.496" k11
40mm 1.575" k11
42mm 1.654" k11
45mm 1.772" k11
48mm 1.890" k11
51mm 2.008" k11
57mm 2.244" k11
64mm 2.520" k11
70mm 2.756" k11
77mm 3.031" k11
80mm 3.150" -0/+1.0mm
85mm 3.346" -0/+1.0mm
90mm 3.543" -0/+1.0mm
95mm 3.740" -0/+1.0mm
103mm 4.055" -0/+1.0mm
112mm 4.409" -0/+1.0mm
115mm 4.527" -0/+1.0mm
121mm 4.764" -0/+1.0mm
130mm 5.118" -0/+1.0mm
140mm 5.511" -0/+1.0mm
154mm 6.063" -0/+1.0mm
170mm 6.693" -0/+1.0mm
190mm 7.480" -0/+1.0mm
205mm 8.071" -0/+1.0mm
222mm 8.740" -0/+2.0mm
242mm 9.527" -0/+2.0mm
260mm 10.236" -0/+2.0mm
282mm 11.102" -0/+2.0mm
312mm 12.283" -0/+3.0mm
342mm 13.464" -0/+3.0mm
370mm 14.567" -0/+3.0mm
460mm 18.110" -0/+3.0mm

 

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01

A2

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• D6

H13

M42

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P20

• 1.2316

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Alloy24™

 

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Steel Express

Based in Wolverhampton, West Midlands, Steel Express are steel suppliers and stockholders. Stock is delivered on our own fleet of vehicles locally and nationally quickly and efficiently on the day we say we will.

We also provide a free issue cutting service, press braking, fabrication and forging.

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