Product properties
˙ Higher strength and roughness
˙ Higher tempering resistance
SpecificationASTM A276
Niobium is added to 403CbPlus Martensite stainless steel so that it has good strength and tempering resistance.
403Cbplus
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Introduction
Industrial Applications
˙ Steam engine
˙ Compressor blades
˙ Bolt and other miscellaneous components
Specifications
Chemical composition (wt. %)
Element
C
Si
Mn
P
S
Cr
Ni
Mo
V
Nb
Min
0.10
-
0.50
-
-
10.40
-
-
-
0.15
Max
0.20
0.50
1.00
0.030
0.030
12.00
0.60
1.00
0.25
0.60
Physical Property
Density (g/cm^3)
7.3
Modulus of elasticity
Temperature (℃)
Gpa
20
21.6
Thermal Expansion Coefficient
Temperature (℃)
10^-6/℃
100
79
Thermal Conductivity
Temperature (℃)
W/m·K
20
24
Mechanical Property
Items
Annealed
Hardness
285-321
Size Ranges
Products
Diameter (mm)
Length (mm)
Forged bar
95.2-127
3,000-5,700
Rolled bar
12-95
3,000-5,700
Billet
130x130, 140x140, 150x150, 160x160
7,000 max.
Flat bar
80*80 (min.)
Based on the customer needs
Heat Treatment Conditions
Heat Treatment Conditions
Quenching: 1100°C min.
Tempering 1: 615°C min.
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