The Body Wire Co., LLC

Phone Icon (833) 228-2458

Learn More Here


17-4ph STAINLESS STEEL (type 630)

Stainless Custom 630 offers high strength and hardness along with excellent corrosion resistance. It is a martensitic precipitation/age-hardening stainless steel that has good fabricating characteristics. This alloy can be aged hardened by a single-step, low-temperature treatment.


It has been used for fasteners, pump shafts, gears, chemical process equipment, oil field valve parts, aircraft fittings, jet engine parts, nuclear reactor components, paper mill equipment, and missile fittings.

17-4ph Stainless Steel is a precipitation hardening martensitic stainless steel. Typical usage is seen in applications requiring high strength and a modest level of corrosion resistance. Strength and toughness desired can be manipulated by temperate range in the heat treatment process. The Body Wire Co. offers high quality standards including: UNS S17400, AMS 5643, ASTM A564 Type 630 and ASTM-F899. 17-4 PH stainless steel can be used for a variety of industries including: pump shafts, oil path, mechanical seals, and the aerospace industry. Below you will find typical applications of 17-4 PH stainless steel as well as the metals composition and mechanical properties.

Stainless Steel Bar Stock – (17-4ph Tubing available on request)

Our stainless steel bar stock is supplied in standard industry lengths of 12'.

17-4ph Stainless Steel Mechanical Properties

Condition Tensile (psi) Strength Yield (psi) Strength Elongation
(% in 2in.)
Reduction of Area (%) Hardness Brinell Hardness Rockwell (Rc)
H900 190,000 170,000 10 40 388 40
H1025 155,000 145,000 12 45 331 35
H1075 145,000 125,000 13 45 311 32
H1150 135,000 105,000 16 50 277 28
H1150-M 115,000 75,000 18 55 255 24
H1150-D 125,000 105,000 16 50 255-311 24-33

17-4 PH Stainless Steel Applications

  • Pump Shafts
  • Oil Patch
  • Mechanical Seals
  • Aerospace

17-4 PH Stainless Steel Composition

Carbon .070 max
Chromium 15.00 - 17.50
Columbian + Tantalum .15 - 0.45
Copper 3.00 - 5.00
Manganese 1.00 max
Nickel 3.00 - 5.00
Phosphorus .040 max
Silicon 1.00 max
Sulfur .030 max

Industry Standards

  • UNS S17400
  • AMS 5643
  • ASTM A564
  • ASTM-F-899 (Modified Chemistry)

With over 40 years of experience, The Body Wire Company offers strong stainless steel that resists corrosion, as well as heat and chemical damage. It is also very easy to maintain, providing a sleek, modern look.

Custom 465® Stainless Steel

This premium-quality, high-strength, age-hardening stainless alloy is designed for improved notch tensile strength, fracture toughness, and fabricability. It has excellent resistance to stress corrosion cracking in the H 1000 condition.


  • General Corrosion Resistance (Similar To Type 304 Stainless Steel)
  • Stress Corrosion Cracking Resistance Equal To Carpenter 13-8 Stainless In the H 1050 Condition
  • Strength Superior To Custom 455 Stainless
  • Notched Tensile Strength That's Superior To Custom 455
  • Fracture Toughness Equal To Carpenter 13-8 Stainless (But At a Higher Strength & Superior To Custom 455)


Custom 465 has been used in medical instruments, small turbine engine shafts, sports equipment, and handguns.


With good corrosion resistance to atmospheric environments, Custom 455 is a martensitic, age-hardening, stainless steel. It is relatively formable and soft in the annealed condition. A single-step aging treatment develops exceptionally high yield strength with good ductility and toughness.

Custom 455 can be machined in the annealed condition and welded in a similar manner to the other precipitation hardenable stainless steels. It can be extensively cold formed because of its low work-hardening rate. The dimensional change during hardening is only about -0.0001 in/in, permitting close-tolerance finish machining in the annealed state. This stainless metal should be considered where ease of fabrication, simplicity of heat treatment, corrosion resistance, and high strength are required in combinations.


This is an electro-slag remelted (ESR) or vacuum arc remelted (VAR) version of Type 316 stainless steel. It is low carbon, and it has high nickel and molybdenum. The secondary premium melting step (ESR or VAR) helps improve cleanliness. Its chemistry modifications are designed to maximize the alloy's corrosion resistance and provide a ferrite-free microstructure. The alloy is nonmagnetic—even after severe cold-forming operations.


It can be used in fracture fixations devices, like bone plates, screws, and intramedullary nails. BioDur Type 316LS is a great steel for implant devices. When high hardness is not a requirement, this alloy can be used in surgical instruments.

Surgical Tools for Dentistry

316LVM Stainless Steel

316LVM Stainless Steel is an electro-slag remelted (ESR) or vacuum arc remelted (VAR). The implant version (ASTM-F138) is a low carbon, high nickel and molybdenum version of 316L Stainless Steel. The secondary premium melting improves micro-cleanliness which is imperative for implant applications. The chemistry modifications are designed to maximize the corrosion resistance of this alloy and the additional Nickel alleviates the possibility of the material becoming magnetic even after severe cold working.

A commercial grade of 316LVM Stainless Steel is also available. Its chemical composition differs from the implantable version. It is offered with the same chemical composition as standard 316L (ASTM-A276), but it has been either electro-slag remelted (ESR) or vacuum arc remelted (VAR).

Standard Industry Specifications

  • UNS S31673
  • ASTM F138 (Bar) , ASTMF139 (Sheet – Plate)
  • ASTM-A276, ASTM-F899
  • ISO 5832-1 Composition D
  • Common Trade Names
  • BioDur® 316LS
  • 316LVM ASTM-A276 ASTM-F899
  • 316LVM Implant Grade ASTM-F138 Common Applications
  • Fracture Fixation Devices
  • Bone Plates
  • Screws
  • Intramedullary Nails
  • Surgical Implant Devices
  • Surgical Instruments


Single figures are nominal except where noted.

Carbon (Maximum)
Phosphorus (Maximum)
Silicon (Maximum)
13.00 to 15.00%
Copper (Maximum)
Manganese  (Maximum) 2.00%
Sulfur  (Maximum) 0.010%
Chromium  (Maximum) 17.00 to 19.00%
Molybdenum  (Maximum) 2.25 to 3.00%
Nitrogen  (Maximum) 0.10%
Carbon  (Maximum) 3.00 - 5.00

Pitting Resistance Equivalent* = 26.00 min.

NOTE: Pitting Resistance Equivalent (PRE) = 3.3 x Mo + Cr

General Information


This Stainless Steel is an electro-slag remelted (ESR) or vacuum arc remelted (VAR), low carbon, high nickel and molybdenum version of 316 stainless. The secondary premium melting step (ESR or VAR) imparts improved cleanliness. The chemistry modifications are designed to maximize the corrosion resistance of this alloy and provide a ferrite free microstructure. The alloy is nonmagnetic even after severe cold forming operations.


This material has found application in fracture fixation devices such as bone plates, screws, and intramedullary nails. This alloy has been used as machining and forging stock for producing surgical implant devices. The alloy has also been used in surgical instruments where high hardness is not a requirement.

Corrosion Resistance

This alloy is balanced with higher chromium, nickel and molybdenum than standard Type 316L stainless, thus increasing its resistance to pitting corrosion. This increased resistance to pitting is illustrated by a Pitting Resistance Equivalent (PRE) of greater than 26 as opposed to a PRE of 23 for standard Type 316L stainless. This chemistry balance, combined with the exceptional cleanliness from the VAR remelt practice and absence of ferrite, makes it an excellent candidate for orthopedic applications.

Important Note:

The following 4-level rating scale is intended for comparative purposes only. Corrosion testing is recommended; factors which affect corrosion resistance include temperature, concentration, pH, impurities, aeration, velocity, crevices, deposits, metallurgical condition, stress, surface finish and dissimilar metal contact.

Nitric Acid
Phosphoric Acid
Sodium Hydroxide
Sea Water
Sulfuric Acid Moderate
Acetic Acid Good
Salt Spray (NaCl) Good
Humidity Excellent


Physical Properties

Specific Gravity
0.2870	lb/in³
Mean Specific Heat
32 to 212°F    0.1200Btu/lb/°F
Mean CTE
32 to 1200°F    10.3    
x 10-6 in/in/°F
Electrical Resistivity
70°F	445.0	ohm-cir-mil/ft

Typical Mechanical Properties

Supplied in the annealed or cold worked condition. Mechanical properties can be tailored to specific applications by changing the cold work percentage. In general, the acceptable property ranges are dependent on bar size due to varying penetration of cold work.

Heat Treatment


Annealing is accomplished by heating in the range of 1800/2050°F (982/1121°C). Typically, the alloy is annealed at the lower end of this range to preserve the fine grain size that is required for medical applications.


This alloy cannot be hardened by heat treatment. It must be hardened by cold working.


Hot Working

This Stainless Steel can be readily forged, upset, and hot headed. To forge, heat uniformly to 2100/2300°F (1149/1260°C). Forgings may be air cooled. Best corrosion resistance is obtained if the forgings are given a subsequent anneal followed by a rapid quench.

Cold Working

It can be deep drawn, stamped, headed and upset without difficulty.


The intentional reduction of sulfur and the cleanliness due to the VAR premium melting practice, and the typically highly cold worked structure make machining more difficult than standard Type 316L stainless.

Additional Machinability Notes

When using carbide tools, surface speed feet/minute (SFPM) can be increased between 2 and 3 times over the high-speed suggestions. Feeds can be increased between 50 and 100%.

Figures used for all metal removal operations covered are average. On certain work, the nature of the part may require adjustment of speeds and feeds. Each job has to be developed for best production results with optimum tool life. Speeds or feeds should be increased or decreased in small steps.


Weldability It can be satisfactorily welded by the conventional automatic and manual electric-arc techniques. The low carbon content reduces the susceptibility to carbide precipitation in the heat affected zone; however, when optimum corrosion resistance is required, a post weld anneal is always considered good practice. Filler metal should be the same alloy as the parent. Because this alloy is balanced to have zero ferrite potential, it is more susceptible to weld hot cracking than standard Type 316L stainless. This effect may be minimized by keeping heat inputs, base metal dilution, and joint restraint to a minimum.

Stainless Steel 316/316L

Stainless Steel 316 or 316L SS is a Chromium-Nickel stainless steel with added molybdenum to increase corrosion resistance and mechanical properties. It is non-magnetic in the annealed condition and not hardenable by heat treatment. Please contact us for more information about how 316/316L can best suit your specific application.

Stainless Steel 316/316L Bar

Our stainless steel bar stock is supplied in standard industry lengths of 12'.

  • Hex Bars
  • Square Bars
  • Flat Bars
  • Rounds Bars

316L/316 Stainless Steel Mechanical Properties

Material Type Condition Ultimate Tensile Strength (PSI) 0.2% Yield Strength (PSI) Elongation
(% in 2in.)
Reduction of Area (%) Hardness Rockwell (Rc)
316 Annealed 75,000 30,000 30 40 *
316L Annealed 75,000 25,000 30 40 35


  • Pump Shafts
  • Chemical Processing Equipment
  • Mechanical Seals
  • Pollution Control Equipment
  • Heat Exchangers
  • Ball Valves

Chemical Composition

Carbon 0.030 - 0.080
Chromium 16.0 - 18.0
Manganese 2.0
Molybdenum 2.0 - 3.0
Nickel 10.0 - 14.0
Silicon 1.00
Sulfur 0.030

Industry Standards

  • UNS S31600 / S31603
  • ASTM A182
  • ASTM A276
  • ASTM A479
  • ASTM F899

303 Stainless Steel Bar

303 Stainless Steel Bar is a non-magnetic, austenitic stainless steel that is not hardenable by heat treatment. It is the free machining modification of the basic 18% chromium / 8% nickel stainless steel. Alloy 303 was specially designed to exhibit improved machinability while maintaining good mechanical and corrosion resistant properties Due to the presence of sulfur in the steel composition, Alloy 303 is the most readily machinable austenitic stainless steel; however, the sulfur addition does lower Alloy 303’s corrosion resistance to below that of Alloy 304. Like other austenitic grades, Alloy 303 demonstrates excellent toughness, although the sulfur does reduce this a little as well.

Stainless Steel Bar Stock – (303 Tubing available on request)

Our stainless steel bar stock is supplied in standard industry lengths of 12'.


303 Stainless Steel is frequently used in applications that require parts to be heavily machined. Some examples include:

  • Nuts and Bolts
  • Shafts
  • Aircraft Fittings
  • Electrical Switchgear Components
  • Gears
  • Bushings
  • Screws

303 Stainless Steel Mechanical Properties

Material Type Condition Ultimate Tensile Strength (PSI) 0.2% Yield Strength (PSI) Elongation
(% in 2in.)
Reduction of Area (%) Hardness Brinell
303 Annealed 90,000 35,000 50 55 160


  • Shafts
  • Nuts
  • Bolts
  • Screws
  • Fasteners
  • Fittings
  • Gears
  • Aircraft Fittings

Chemical Composition (maximum unless noted)

Carbon 0.12
Chromium 17.0 - 19.0
Manganese 2.0
Sulfur 0.15 min
Nickel  8.0 - 10.0
Silicon 1.00
Phosphorus 0.20

Industry Standards

  • UNS S30300
  • ASTM A582
  • AMS 5640 T-1
  • QQS764
  • ASTM F899

How to pick the correct Stainless Steel for your Application

Stainless Steel is known primarily for its corrosion resistance, is used in a wide variety of applications. The diverse range of grades allows it to accommodate various applications across many different industries. Consider these things when choosing a stainless steel.

Does the stainless steel need to have good formability?

If the application requires good formability, avoid the martensitic group of stainless steels. Try an austenitic grade such as 304 or a ferritic grade such as 430. Martensitic stainless steels like 410 tend to be brittle and are not readily formable. Austenitic stainless steels are usually the best choice when it comes to formable stainless steels.

Does the stainless steel need to be welded?

Welding stainless steel is very different than welding carbon steel and can lead to problems such as intergranular corrosion, hot cracking and stress corrosion cracking. The most weldable stainless steels are typically in the austenitic group. When welding austenitic stainless steels, grades such as 304L or 347 should be used. Grade 304L has lower carbon while 347 has niobium stabilizers added to it which help to deter intergranular corrosion. Ferritic stainless steels such as grade 430 or grade 439 are also readily weldable, as are Duplex stainless steels. Martensitic stainless are generally not suitable for welding. However, some martensitic stainless steel grades with lower amounts of carbon can be welded. With precipitation hardened stainless steels, care should be taken to ensure that the original mechanical properties are not compromised during the welding process.

Does the stainless steel need to be machined?

If machining is required, special considerations must be accounted for when working with stainless steel. Most grades of stainless steel can be machined. However, stainless steel is very susceptible to work hardening. The machining process must be optimized to work at a rate that helps alleviate this issue, and the tools used for machining must also be kept in good working condition. Similar to carbon steels, sulfur can be added to increase machinability; Type 303 is an example of this. It is very similar to grade 304 except that sulfur has been added to it for machining purposes. Type 416 is example of a Martensitic stainless steel with added sulfur. 

How much and what type of corrosion resistance is desired?

Stainless steel is usually chosen for its corrosion resistant properties, but it is important to know that different grades provide different amounts of corrosion resistance. Austenitic stainless steels generally provide the most corrosion resistance because of their high amounts of chromium. This makes grade 304 an excellent choice when corrosion resistance is important. Type 316 is similar to grade 304, but it has molybdenum as part of its chemical makeup, further increasing its corrosion resistance. Ferritic stainless steels and martensitic are generally more affordable than austenitic stainless steel because they have less nickel and sometimes less chromium than austenitic stainless steels, which can result in a loss of corrosion resistance. Duplex stainless steels can be used to avoid the stress corrosion cracking associated with austenitic stainless steels.

Does the stainless steel need to be heat treated?

If the stainless steel is going to be subjected to heat treatment, it is important to know how the various grades of stainless steel can be affected. For the most part, austenitic stainless steels and ferritic stainless steels are non-hardenable when heat treated. The heat treatable stainless steels are typically martensitic or precipitation hardened. Examples of these are 440C and 17-4ph, respectively.

What are the strength requirements of the stainless steel?

Very high strengths can be achieved with martensitic stainless steels, like grade 440C; and precipitation hardened stainless steels, like grades 17-4ph and 15-5ph. Austenitic stainless steels, such as grade 316, can provide high strengths as well, though not as high as the martensitic grades. Austenitic stainless steels also have more nickel than other stainless steels, so a grade like 316 will have greater toughness and ductility than ferritic and martensitic stainless steels. Duplex stainless steels can provide ferritic stainless steel properties while still maintaining a ductility and a toughness close to austenitic stainless steels.

Typical Applications

Sometimes the best way to find out what grade of stainless steel should be used is to see what has been used in the past. Here are some examples of where certain grades of stainless steel are used.

Austenitic Stainless Steels:

  • Grade 303: Fasteners, fittings, gears
  • Grade 304: General purpose austenitic stainless steel
  • Grade 304L: Grade 304 applications that require welding
  • Grade 309: Applications involving elevated temperatures
  • Grade 316: Chemical applications
  • Grade 316L: Grade 316 applications that require welding

Martensitic Stainless Steels:

  • Grade 416: Axles, shafts, and fasteners
  • Grade 410: Generable purpose martensitic stainless steel
  • Grade 440C: Bearings, knives, and other wear resistant applications

Precipitation Hardened Stainless Steels:

  • 17-4 PH: Aerospace, nuclear, and chemical applications
  • 15-5 PH: Valves, fittings, and fasteners

Duplex stainless steels:

  • 2205: Heat exchangers and pressure vessels
  • 2507: Pressure vessels and desalination plants
Other Grade We Offer:
13-8 MO
302/304/304L COND A B
455 & 465
15-5 PH ESR
15-5 PH VM H-1025
17-4 H1150D
17-4 PH H-1150
17-4 PH H900
17-4 PH ANNEALED 310
440F SEL
17-7 PH SPR & ANN
316 COND B