Product properties
˙ High strength
SpecificationBS 970 PART 3 826M40
EN26
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Introduction
Industrial Applications
˙ Aerospace industry
˙ Machine industry
˙ Mainly used for landing gear, aero-engine, and fuselage parts, heavy gear, pinion, link rod, crank shaft, differential shaft, and other transmission parts, high-strength bolt, and stud motor shaft, turbine disk
Specifications
Chemical composition (wt. %)
Element
C
Si
Mn
P
S
Ni
Cr
Mo
V
Min.
0.36
0.10
0.45
-
-
2.30
0.50
0.45
0.05
Max.
0.41
0.35
0.70
0.015
0.015
2.80
0.80
0.65
0.09
Physical Property
Density (g/cm^3)
7.85
Thermal Expansion Coefficient
Temperature (℃)
10^-6/℃
761
34.3
Thermal Conductivity
Temperature (℃)
W/m·K
631
41
Mechanical Property
Items
Annealed
Hardness
277 HBW 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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