48
Grades in Stock
4
Material Families
ISO 9001:2015
Certified
Nationwide
Distribution
Batavia, IL · (877) 541-6421
Steel Product Catalog
Every grade we stock — forms, size ranges, and key applications. Search by grade number or filter by category, then request a quote or spec sheet directly.
43 grades shown
4140
Chromium-molybdenum alloy with excellent strength, toughness, and wear resistance.
4140 GBQ
Gun Barrel Quality 4140 with tightly controlled chemistry for bore integrity.
4150
Higher-carbon 4140 variant offering greater surface hardness and wear resistance.
4150MOD
Modified 4150 meeting military barrel specifications for hardness and chemistry.
4130
Weldable chromoly, high strength-to-weight ratio, good fatigue life.
4320
Ni-Cr-Mo case-hardening steel with excellent core toughness after carburizing.
4340
Ultra-high-strength alloy with superior fatigue and impact resistance.
41V45
Vanadium-modified alloy providing outstanding impact toughness for high-stress parts.
6150
Chromium-vanadium spring steel with outstanding fatigue and shock resistance.
8620
Versatile Ni-Cr-Mo carburizing steel; tough core, hard case.
9310
Aircraft Quality vacuum-degassed Ni-Cr-Mo (1.25% Cr / 3.25% Ni / 0.12% Mo).
CrMoV
Chromium-molybdenum-vanadium alloy optimized for barrel and bore applications.
1137
Resulphurized free-machining steel for high-volume turned-parts production.
303
Free-machining austenitic SS — sulfur-added for fast chip-breaking.
304
Most widely used austenitic grade — excellent general corrosion resistance.
304L
Low-carbon 304 for improved weldability without post-weld annealing.
316
Molybdenum-bearing austenitic SS; superior pitting and crevice corrosion resistance.
410
Hardenable martensitic SS; balances corrosion resistance with high strength.
416
Free-machining martensitic SS optimized for turning and drilling operations.
416R
Rifle-barrel-quality 416 with controlled chemistry for gun drilling and button rifling.
416HT
Heat-treated 416 supplied at elevated hardness for ready-to-machine barrel stock.
420
Higher-carbon martensitic SS with excellent hardness after heat treatment.
440C
Highest-carbon martensitic SS; maximum achievable hardness among standard SS grades.
17-4PH
Precipitation-hardening SS combining high strength with good corrosion resistance.
A2
Air-hardening cold-work steel with minimal distortion on heat treatment.
A6
Air-hardening at lower treatment temperature than A2; minimal distortion.
D2
High-carbon, high-chromium cold-work steel; exceptional wear and abrasion life.
D3
Oil-hardening high-C/Cr steel offering maximum wear resistance.
S1
Chromium-tungsten shock-resistant steel for heavy impact applications.
S5
Silicon-manganese shock-resistant steel; oil or water hardening.
S7
Air or oil hardening shock steel; outstanding toughness at high hardness levels.
H13
Chromium hot-work steel with excellent resistance to heat checking and thermal fatigue.
O1
Oil-hardening cold-work steel; good all-around toughness and machinability.
L6
Low-alloy nickel tool steel; outstanding toughness for shock-loaded tools.
W1
Water-hardening high-carbon tool steel; most economical and widely available.
9V
High vanadium PM tool steel delivering superior abrasion resistance.
10V
Extreme abrasion resistance through 10% vanadium carbide content.
S90V
High vanadium + chromium PM stainless tool steel; excellent edge retention.
M2
Standard high-speed steel with excellent red hardness and wear resistance.
M4
PM high-speed steel with superior wear resistance vs. M2.
M10
Molybdenum high-speed steel; close substitute for M2 in most applications.
M42
Cobalt high-speed steel for machining hard and difficult-to-cut materials.
A11
Ultra-high vanadium PM for maximum wear and abrasion resistance.
Don't see your grade?
Bar One Specialty Steel services special orders and hard-to-find grades. Contact our team and we'll source it for you.
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