Stainless Steel

Alloys International is a leading supplier of stainless steel in austenitic 300-series, martensitic and ferritic 400-series, precipitation-hardening (PH) grades, and high-nitrogen Nitronic alloys. Full certification and chemical & physical test reports ship with every order.

Corrosion resistantHigh strengthExcellent weldability

Grades (26)

Key grades

15-5 PH
W.Nr 1.4545
15-5 PH (S15500) in H900 through H1150 conditions, bar, plate and forgings, with transverse toughness better than 17-4.
X5CrNiCu15-5
AMS 5862 · AMS 5659 · ASTM A564 · ASTM A693
13-8 PH
W.Nr 1.4534
13-8 PH (S13800) supplied H900 through H1150 in bar, billet and forgings, for high-strength corrosion-resistant airframe hardware.
X3CrNiMoAl13-8-2
AMS 5629 · AMS 5864 · AMS 5934 · ASTM A564 · ASTM A693
17-4 PH
W.Nr 1.4542
17-4 PH (S17400) in H900 through H1150, the most widely used precipitation hardening stainless, in bar, plate, sheet and forgings.
X5CrNiCuNb16-4
AMS 5643 · AMS 5622 · AMS 5604 · ASTM A564 · ASTM A693
17-7 PH
W.Nr 1.4568
17-7 PH (S17700) in CH900, RH950 and TH1050 conditions, principally sheet and strip for springs and formed high-strength parts.
X7CrNiAl17-7
AMS 5528 · AMS 5529 · AMS 5568 · AMS 5644 · AMS 5678
301 (A, 1/4H, 1/2H, 3/4H, FH)
W.Nr 1.4310
301 in annealed and 1/4H, 1/2H, 3/4H and full hard tempers, stocked in sheet and coil for formed and spring hardware.
X10CrNi18-8
AMS 5515 · AMS 5517 · AMS 5518 · AMS 5519 · MIL-S-5059
302
W.Nr 1.4300
302 and 302B general purpose austenitic stainless in bar, sheet, strip and wire. 302B adds silicon for improved scaling resistance at temperature.
X12CrNi18-8
AMS 5516 · AMS 5688 · QQA-763 · MIL-S-7720
304
W.Nr 1.4301
304, 304L and boron-bearing 304B in bar, sheet, plate, tube and wire. The most widely specified austenitic grade, with L for welded assemblies and B for neutron absorption.
X5CrNi18-10
AMS 5513 · AMS 5560 · AMS 5563 · AMS 5564 · AMS 5565
321
W.Nr 1.4541
321 titanium-stabilized austenitic stainless for welded service between 800F and 1500F. Sheet, plate, bar and tube.
X6CrNiTi18-10
AMS 5510 · AMS 5645 · AMS 5570 · AMS 5576 · AMS 5689
418 (Greek Ascoloy)
418 (Greek Ascoloy), a 12Cr-W martensitic grade for compressor blades and high-temperature turbine hardware.
AMS 5508 · AMS 5616 · AMS 5817
430F
UNS S43020W.Nr 1.4104
430F free-machining ferritic stainless for high-volume turned parts, in bar and shapes.
ASTM A582 · QQ-S-764 · UNS S43020
431
UNS S43100W.Nr 1.4057
431 high-strength martensitic stainless with good corrosion resistance, stocked in bar and billet for shafting and fasteners.
AMS 5628 · ASTM A276 · MIL-S-18732 · UNS S43100
440-F
440F free-machining martensitic stainless for high-volume turned parts needing wear resistance.
AMS 5632 · ASTM A582 · QQ-S-764
Custom 465
UNS S46500
Custom 465, a martensitic age-hardenable stainless with very high strength and toughness for airframe and fastener applications.
AMS 5936 · ASTM A564/A564M-19A · BMS 7-364 CL A REV A · BSS 7025 (7/12/94) · BSS 705 REV B

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