Questions? Feedback? powered by Olark live chat software
Home ¤ Alloy Steel ¤ Aluminum ¤ Brass ¤ Bronze ¤ Carbon Steel ¤ Chainsaw Scabbard ¤ Copper ¤ Lead ¤ Man Cave Goodies ¤ Metric Round ¤ Patina's and metallic coatings ¤ Picatinny Rail ¤ Plastics ¤ Sanitary Stainless Tube ¤ Stainless ¤ Titanium
Alcobra Metals, Inc. : Distributor of Specialty Metals

Stainless Product Guide

Purchase Stainless HERE!

Sections:

Like all types of steel, stainless steel is not a single metal but an alloy made from two or more separate elements alloyed or "melted" together. What all steels have in common is that their major "ingredient" (alloying element) is the metal iron, to which a small amount of carbon has been added. Stainless steel was invented early in the 20th century when it was discovered that a certain amount of the metal chromium (usually a minimum of 11 per cent) added to ordinary steel gave it a bright shiny gloss and made it highly resistant to tarnishing and rusting. This rust-resisting property which we call "corrosion resistance" is what sets stainless steel apart from most other forms of steel.

303 Stainless Steel (available in Hex, Round)
304 Stainless Steel (available in Angle, Hex, Perforated Sheet, Pipe, Plate, Rectangle, Round, Sheet, Square, Square Tube, Tube)
316 Stainless Steel (available in Angle, Hex, Pipe, Plate, Rectangle, Round, Sheet, Square, Square Tube, Tube)
301 Stainless Steel (available in Sheet)
302 Stainless Steel (available in Sheet)
310 Stainless Steel (available in Sheet)
321 Stainless Steel (available in Plate, Sheet)
347 Stainless Steel (available in Plate, Sheet)
410 Stainless Steel (available in Plate, Sheet)
416 Stainless Steel (available in Round)
430 Stainless Steel (available in Sheet)
15-5 Stainless Steel (available in Round, Sheet)
17-4 Stainless Steel (available in Plate, Round, Sheet)
17-7 Stainless Steel (available in Sheet)
Nitronic 50 Stainless Steel (available in Round)
Nitronic 60 Stainless Steel (available in Round)

303 Stainless Steel

T-303 is a free machining variation of T-302/304 for use in automatic machining operations. Corrosion resistant to atmospheric exposures, sterilizing solutions, most organic and many inorganic chemicals; most dyes, nitric acid and foods. One of the 3 main alloys of commercially available stainless steel. The primary reason to use 303 is when you need a stainless steel with machining capabilities better than that of 304 and 316. It has roughly the same corrosion resistance as 304, but not as good as 316. The main drawback with the alloy is that it is not generally considered to be as weldable.

303 stainless steel (cold drawn annealed, room temperature)

Minimum Properties

Ultimate Tensile Strength, psi 89,900
Yield Strength, psi 34,800
Elongation 50%
Rockwell Hardness B83

Chemistry

Iron (Fe) 69%
Carbon (C) 0.15% max
Chromium (Cr) 18%
Manganese (Mn) 2% max
Molybdenum (Mo) 0.6% max
Nickel (Ni) 9%
Phosphorus (P) 0.2% max
Sulphur (S) 0.15% min
Silicon (Si) 1% max

304 Stainless Steel

T-304 is the most widely used stainless steel in the world. You can find it in everything from cars and knives to the space shuttle. Also known as a food grade. It is weldable, machinable and has good corrosion resistance to many chemical corrodents as well as industrial atmospheres. Has very good formability and can be readily welded by all common methods.

304 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 73,200
Yield Strength, psi 31,200
Elongation 70%
Rockwell Hardness B70

Chemistry

Iron (Fe) 66.5 - 74%
Carbon (C) 0.08% max
Chromium (Cr) 18 - 20%
Manganese (Mn) 2% max
Nickel (Ni) 8 - 10.5%
Phosphorus (P) 0.045% max
Sulphur (S) 0.03% max
Silicon (Si) 1% max

316 Stainless Steel

Better corrosion and pitting resistance as well as higher strength at elevated temperatures than T304. Used for pumps, valves, textile, chemical equipment, pulp & paper and marine applications. Also known as marine-grade or food grade stainless steel, T-316 is similar in machinability and weldability to T-304.

316 stainless steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 89,900
Yield Strength, psi 60,200
Elongation 45%
Rockwell Hardness B91

Chemistry

Iron (Fe) 65%
Carbon (C) 0.08% max
Chromium (Cr) 17%
Manganese (Mn) 2%
Molybdenum (Mo) 2.5%
Nickel (Ni) 12%
Phosphorus (P) 0.045%
Sulphur (S) 0.03% min
Silicon (Si) 1%

301 Stainless Steel

Grade 301 can be supplied with a tensile strength of up to 1800 MPa in strip and wire forms, to produce tempers in the range of 1/16 Hard to Full Hard. The controlled analysis of Grade 301 enables it to retain sufficient ductility in conditions up to 1/2 hard conditions to be roll or brake formed into aircraft, architectural and particularly rail car structural components. However, 3/4 to full hard tempers should be used whenever high wear resistance and spring features are required in components of simple form designs.

Grade 301L with low carbon is preferred for improved ductility, and another variant 301LN with higher nitrogen content has a higher work hardening rate than standard 301.

301 stainless steel

Minimum Properties
(annealed condition)

Ultimate Tensile Strength, psi 74,700 min
Yield Strength, psi 29,700 min
Elongation 40% min
Rockwell Hardness B85

Minimum Properties
(1/4 hard condition)

Ultimate Tensile Strength, psi 125,000 min
Yield Strength, psi 75,000 min
Elongation 25% min
Rockwell Hardness C25

Minimum Properties
(1/2 hard condition)

Ultimate Tensile Strength, psi 150,000 min
Yield Strength, psi 110,000
Elongation 18% min
Rockwell Hardness C32

Minimum Properties

(3/4 hard condition)
 

Ultimate Tensile Strength, psi 185,000 min
Yield Strength, psi 140,000 min
Elongation 9% min
Rockwell Hardness C41

Chemistry

Iron (Fe) 75%
Carbon (C) 0.15% max
Chromium (Cr) 16 - 18%
Manganese (Mn) 2% max
Nitrogen (N) 0.1% max
Nickel (Ni) 6 - 8%
Phosphorus (P) 0.045% max
Sulphur (S) 0.03% max
Silicon (Si) 0.75% max

302 Stainless Steel

Type 302 is a slightly higher carbon version of type 304, most commonly found in strip and wire forms. While still used in a variety of industries, many applications have shifted to 304 and 304L due to advances in melting technology, availability and cost. Primarily used in the stamping, spinning and wire forming industry. This alloy is formed into all types of washers, springs, screens and cables.

302 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 89,900
Yield Strength, psi 39,900
Elongation 55%
Rockwell Hardness B85

Chemistry

Iron (Fe) 70%
Carbon (C) 0.15% max
Chromium (Cr) 18%
Manganese (Mn) 2% max
Nickel (Ni) 9%
Phosphorus (P) 0.045% max
Sulphur (S) 0.03% max
Silicon (Si) 1% max

310 Stainless Steel

The strength of this alloy is a combination of good strength and corrosion resistance in temperatures up to 2100 F (1149 C). Due to its relatively high chromium and nickel content it is superior in most environments to 304 or 309 stainless.

Applications can be found in oven linings, boiler baffles, kilns, lead pots, radiant tubes and fireboxes.

310 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 89,900
Yield Strength, psi 45,000
Elongation 45%
Rockwell Hardness B85

Chemistry

Iron (Fe) 48 - 53%
Carbon (C) 0.25%
Chromium (Cr) 26%
Manganese (Mn) 2%
Nickel (Ni) 19 - 22%
Phosphorus (P) 0.045% max
Sulphur (S) 0.03%
Silicon (Si) 1.5%

321 Stainless Steel

This material is stabilized with titanium for weldments subject to severe corrosion. No carbide precipitation. Excellent resistance to a variety of corrosive media. Immune to most organic chemicals, dyestuffs and many inorganic chemicals. Has similar properties to alloy 304, but its titanium content limits carbide precipitation, making it somewhat easier to machine.

321 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 89,900
Yield Strength, psi 34,800
Elongation 45%
Rockwell Hardness B80

Chemistry

Iron (Fe) 68%
Carbon (C) 0.08%
Chromium (Cr) 18%
Manganese (Mn) 2%
Nickel (Ni) 11%
Phosphorus (P) 0.045% max
Sulphur (S) 0.03%
Silicon (Si) 1%
Titanium (Ti) 0.15%

347 Stainless Steel

Similar to 321 stainless, 347 uses columbium as a stabilizing element to maximize its principal feature: resistance to intergranular corrosion. It can be used in applications requiring repeated heating in the range of 800 and 1650 F (427-899 C). It works well as high temperature gaskets, expansion joints, rocket engine parts, and aircraft collector rings, exhaust manifolds and chemical production equipment.

347 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 95,000
Yield Strength, psi 39,900
Elongation 45%
Rockwell Hardness B85

Chemistry

Iron (Fe) 68%
Carbon (C) 0.08% max
Chromium (Cr) 17%
Manganese (Mn) 2%
Nickel (Ni) 11%
Niobium (Nb) + Tantalum (Ta) 0.8%
Phosphorus (P) 0.045% max
Sulphur (S) 0.03%
Silicon (Si) 1%

410 Stainless Steel

This is a heat treatable stainless used widely where corrosion is not severe. Applications include air, fresh water, some chemicals and food acids. Typical uses include valve & pump parts, fasteners, cutlery, turbine parts, and bushings.

410 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 65,000
Yield Strength, psi 30,000
Elongation 20 - 34%
Rockwell Hardness B82

Chemistry

Iron (Fe) 86%
Carbon (C) 0.15% max
Chromium (Cr) 12.5%
Manganese (Mn) 1% max
Phosphorus (P) 0.04% max
Sulphur (S) 0.03%

416 Stainless Steel

Free machining variation of T 410 with useful corrosion resistance to natural food acids, basic salts, water and most atmospheres.

416 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 74,700
Yield Strength, psi 39,900
Elongation 30%
Rockwell Hardness B82

Chemistry

Iron (Fe) 84%
Carbon (C) 0.15% max
Chromium (Cr) 13%
Manganese (Mn) 1.25% max
Molybdenum (Mo) 0.6% max
Phosphorus (P) 0.06% max
Sulphur (S) 0.15% min
Silicon (Si) 1% max

430 Stainless Steel

Stainless steel type 1.4016 is also commonly known as grade 430. Type 430 stainless steel combines good corrosion resistance with good formability and ductility.

It is a ferritic, non-hardenable plain chromium stainless steel with excellent finish quality.

Grade 430 also has excellent resistance to nitric attack, which makes it well suited to use in chemical applications. The most popular applications for 430 are in domestic appliances and decorative trim.

 

430 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 75,000
Yield Strength, psi 50,000
Elongation 25%
Rockwell Hardness B85

Chemistry

Iron (Fe) 87%
Carbon (C) 0.12% max
Chromium (Cr) 11%
Manganese (Mn) 1% max
Phosphorus (P) 0.04% max
Sulphur (S) 0.03% max
Silicon (Si) 1% max

15-5 Stainless Steel

A vacuum arc remelted grade also known as a PH, or precipitation-hardening, grade of stainless steel. This alloy is used a great deal in the aircraft industry in part due to its high strength, and also because there are a wide range of heat treatments to choose from to reach a specified hardness or other properties.

15-5 PH Stainless Steel Condition A (annealed)

Minimum Properties

Ultimate Tensile Strength, psi 161,000
Yield Strength, psi 140,000
Elongation 7.6%
Rockwell Hardness C35

Chemistry

Iron (Fe) 71.91 - 79.85%
Carbon (C) 0.07% max
Chromium (Cr) 14 - 15.5%
Manganese (Mn) 1% max
Niobium (Nb) + Tantalum (Ta) 0.15 - 0.45% max
Nickel (Ni) 3.5 - 5.5%
Phosphorus (P) 0.04% max
Sulphur (S) 0.03% min
Silicon (Si) 1% max

17-4 Stainless Steel

Also known as a PH, or precipitation-hardening, grade of stainless. Similar to 304 in most media this alloy is used a great deal in the aircraft industry in part due to its high strength, and also because there are a wide range of heat treatments to choose from to reach a specified hardness or other properties. This alloy is very similar to 15-5 except that 17-4 tends to have more ferrite, and is slightly more magnetic.

17-4 PH Stainless Steel Condition A (annealed)

Minimum Properties

Ultimate Tensile Strength, psi 160,000
Yield Strength, psi 145,000
Elongation 5%
Rockwell Hardness C35

Chemistry

Iron (Fe) 69.91 - 78.85%
Carbon (C) 0.07% max
Chromium (Cr) 15 - 17.5%
Manganese (Mn) 1% max
Niobium (Nb) + Tantalum (Ta) 0.15 - 0.45% max
Nickel (Ni) 3 - 5%
Phosphorus (P) 0.04% max
Sulphur (S) 0.03% min
Silicon (Si) 1% max

17-7 Stainless Steel

A precipitation hardenable chromium-nickel stainless steel combining high strength, moderate corrosion resistance and properties well suited for flat springs. Used for applications requiring good strength, corrosion resistance and mechanical properties up to 800 F in service. It is often used for very detailed, intricate parts due to its low distortion in heat treatment. Very stable. Commonly found in a variety of springs and washers.

17-7 PH Stainless Steel Condition A (annealed)

Minimum Properties

Ultimate Tensile Strength, psi 130,000
Yield Strength, psi 40,000
Elongation 35%
Rockwell Hardness B85

Chemistry

Iron (Fe) 70.59 - 76.75%
Carbon (C) 0.09% max
Chromium (Cr) 16 - 18%
Aluminum (Al) 0.75 - 1.5% max
Manganese (Mn) 1% max
Nickel (Ni) 6.5 - 7.75%
Phosphorus (P) 0.04% max
Sulphur (S) 0.03% min
Silicon (Si) 1% max

Nitronic 50 Stainless

A nitrogen strengthened austenitic stainless that provides a combination of corrosion resistance and strength. Corrosion resistance greater than that of T316 and T316L plus approximately twice the yield strength. Very good mechanical properties at both elevated and subzero temperatures.

Nitronic 50 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 116,000
Yield Strength, psi 57,000
Elongation 47%
Rockwell Hardness B91

Chemistry

Iron (Fe) 58%
Chromium (Cr) 22%
Manganese (Mn) 5%
Molybdenum (Mo) 2.25%
Nitrogen (N) 0.3%
Nickel (Ni) 12.5%
Silicon (Si) 1% max

Nitronic 60 Stainless

Excellent galling resistance and corrosion resistance. Comparable to T304 plus approximately twice the yield strength. Metal to metal abrasive wear resistance is also good.

 

Nitronic 60 Stainless Steel (annealed condition)

Minimum Properties

Ultimate Tensile Strength, psi 103,000
Yield Strength, psi 60,000
Elongation 64%
Rockwell Hardness B95

Chemistry

Iron (Fe) 62%
Chromium (Cr) 17%
Manganese (Mn) 8%
Nitrogen (N) 0.14%
Nickel (Ni) 8.5%
Silicon (Si) 4% max

Alcobra Metals states that all technical data is for comparison purposes only and is NOT FOR DESIGN. It has been compiled from sources we believe to be accurate but cannot guarantee. Please consult an Engineer.