Product | Gloria Material Technology corp.

4340

1.6563, G43400, SNB24

SpecificationASTM A322, ASTM A29

One kind of low alloy steel that is composed of strengthened alloy elements. When compared with 4140, it has higher strength and toughness with outstanding resistance to fatigue, wear, and atmosphere corrosion.

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Introduction
Specifications

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Introduction

Product properties

˙Good fatigue resistance

˙High toughness

˙High strength after heat treatment

Industrial Applications

˙Machine industry

˙Automobile industry

˙Aerospace

˙Oil, gas, and water

Specifications

Chemical composition (wt. %)

Element

Min.

0.38

0.15

0.65

1.65

0.70

0.20

Max.

0.43

0.35

0.80

0.025

2.00

0.90

0.30

0.35

Physical Property

Density (g/cm^3)

7.87

Thermal Expansion Coefficient

Temperature (℃)

10^-6/℃

12.6

Thermal Conductivity

Temperature (℃)

W/m·K

40.5

Mechanical Property

Items

Annealed

Hardness (HBW)

235 max.

Size Ranges

Products

Diameter (mm)

Length (mm)

Rolled bar

10~95

3,000~5,700

Forged bar

95.2~600

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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