Stainless Steel 13-8 Product Guide

Applications | Specifications | Mechanical and Chemical Data | Tolerances

Overview

13-8 stainless steel is a martensitic stainless steel with excellent strength, high hardness, superior toughness, and good corrosion resistance. Additionally, 13-8 exhibits good ductility and fabrication characteristics. As such, it is typically used in aircraft frames, other aerospace applications, petrochemical and nuclear plants.

Common Trade Names

UNS S13800, 13-8Mo, 13-8PH, 13-8 PH, 13/8 Mo, 13/8Mo, 13/8PH, 13/8 PH, PH 13-8 Mo, Precipitation Hardening

Other Resources

Safety Data Sheet | Weight Calculator | Mill Test Reports

Products

Purchase Round Bar 13-8

Applications

Aerospace
Petrochemical
Nuclear Plants

Stainless 13-8 Specifications

ASTM	AMS	ASME
A564	5629	SA-564

	Annealed	-H950
Physical Properties 13-8
Density	0.284 lb/in3	0.284 lb/in3
Ultimate Tensile Strength	175 ksi max	220 ksi
Yield Tensile Strength	N/A	205 ksi
Fatigue Strength	N/A	130 ksi
Shear Strength	N/A	150 ksi
Shear Modulus	N/A	11,000 ksi
Hardness Rockwell \| Brinell	C38 \| 363 max	C45 \| 421 min
Elongation at Break Percentage	N/A	10%
Reduction of Area	N/A	45%
Modulus of Elasticity	N/A	28,600 ksi
Poisson's Ratio	0.28	0.28
Machinability Percentage	N/A	35-40%
Melting Point	2,560-2,680 °F	2,560-2,680 °F
Specific Heat	1.1 x 10^-1 BTU/lb-°F	1.1 x 10^-1 BTU/lb-°F
Thermal Conductivity	112 BTU-in/hr-ft^2-°F	112 BTU-in/hr-ft^2-°F
Electrical Conductivity	2.3% IACS	2.3% IACS

Chemistry Information
Element	Percentage
Al	0.9 - 1.35
C	0.05 max
Cr	12.25 - 13.25
Fe	76
Mn	0.1 max
Ni	7.5 - 8.5
Mo	2 - 2.5
N	0.01 max
P Max	- 0.01
Si	0.1 max
S	0.008 max

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