440B/1.4112/X90CrMoV18/S44003 | Martensite Stainless Steel

440B

1.4112, S44003, SUS 440B

SpecificationDIN EN 10088, ASTM A276/A276M, ASTM A473, JIS G4303

It is a high carbon, chromium Martensite stainless steel that has a lower carbon content than that of 440C. After heat treatment, it has good hardness and machinability similar to that of high speed steels.

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Specifications

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Introduction

Product properties

˙Good strength

˙Superior wear resistance

˙High anti-scratch ability

Industrial Applications

˙Measurement instruments

˙Size block

˙Tableware

˙Cutting tools

˙Molds

˙Ball bearings

˙Valve parts

Specifications

Chemical composition (wt. %)

Element

Min.

0.75

16.00

Max.

0.95

1.00

0.040

0.030

18.00

0.75

Physical Property

Density (g/cm^3)

7.74

Modulus of elasticity

Temperature (℃)

Gpa

500

170

206

Thermal Expansion Coefficient

Temperature (℃)

10^-6/℃

0-538

11.7

0-315

10.3

Thermal Conductivity

Temperature (℃)

W/m·K

100

24.2

Mechanical Property

Items

Annealed

Hardness

269 (HBW) max.

Hardness After Quenching (hardenability)

56 (HRC) min.

Size Ranges

Products

Diameter (mm)

Length (mm)

Rolled bar

10~95

3,000~5,700

Forged bar

95.2~280

3,000~5,700

Billet

130x130, 140x140, 150x150, 160x160

7,000 max

Flat bar

80x80 (min.)

Based on the customer needs

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Martensite Stainless Steel bar 440B/1.4112/X90CrMoV18/S44003 – GMTC

440B

Product properties

Industrial Applications

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