Grade
|
Minimum Ultimate Tensile
Strength
|
General
Use
|
Carbon steels
|
100,000 psi to 175,000 psi
|
Often used for nuts
|
Alloy steels
|
100,000 psi to 180,000 psi
|
Used for bolts and screws
|
Tool steel (H-11)
|
Up to 260,000 psi
|
High strength fasteners
|
Austenitic stainless steels (300
series)
|
75,000 psi (carbide
solution treated)
100,000 psi to 125,000 psi (strain hard)
|
Corrosion resistant fasteners
|
Martensitic stainless steels
(400 series)
|
90,000 psi to 140,000 psi
|
Less corrosion resistance than 300 series
|
Precipitation hardenable (PH) stainless steels
(17-4PH, A286)
|
80,000 psi to 180,000 psi
|
Corrosion resistance similar to 300 series
stainless
|
PH Nickel based alloys
(Inconel 718, Inconel X750, Waspaloy)
|
140,000 psi to 180,000 psi
225,000 psi (hardened)
|
Superior corrosion resistance, elevated temperature
strength
|
Non-HT Nickel based alloys
(Alloy 20, Inconel 600, Inconel 625, Inconel 686)
|
80,000 psi to 120,000 psi (annealed)
Up to 180,000 psi (strain
hardened)
|
Corrosion resistance in severe
environments
|
Nickel-Copper alloy
(Monel 400)
|
80,000 psi
|
Corrosion resistance in a variety of environments
including seawater
|
Nickel-Copper-Aluminum alloy
(K-500)
|
160,000 psi
|
Corrosion resistance in a variety of environments
including seawater
|
Cobalt based alloys
(MP35N, MP159)
|
Up to 260,000 psi
|
Superior corrosion resistance
|
Titanium alloys
(commercially pure;
alpha-beta alloys)
|
35,000 psi to 80,000 psi (annealed)
140,000 psi to 190,000 psi (hardened)
|
Light weight, excellent corrosion
resistance
|
Copper based alloys
|
30,000 psi to 70,000 psi
|
Electrical conductivity, heat transfer, corrosion
resistance
|
