17-4 Stainless Steel

17-4 stainless steel, is a common and exceptionally durable type of steel used in a diverse variety of industries and applications.

17-4 takes it’s name from the 17% Chromium and 4% Nickle composition.  It also contains 3% Copper.  This composition makes 17-4 it’s a great choice for applications requiring high strength and hardness in combination with moderate corrossion resistance.

Applications include; architectural panelling and moldings, kitchen equipment, food industry equipment, the pulp and paper industry and even as nuclear waste casks.  Contact us for the best prices on bar and wire.

17-4 Stainless Steel Bar Grinding Services

  • Chromium-nickel grade of Stainless Steel
  • Hardened by a single low-temperature precipitation-hardening treatment which provides the stainless steel with excellent mechanical properties at a high strength level
  • Should not be used in the solution treated condition

Available Forms

17-4 stainless steel is available in:

  • Bar
  • Wire

Specifications

Type 17-4 is covered by the following specifications:

  • AMS 5643
  • ASTM A 564 Type 630

Typical Applications

  • Low carbon Content of 304 and 304L is more conducive to welding than type 302
  • Applications include architectural moldings and trim and kitchen equipment
  • Alloys are widely used for welded components of processing equipment for textile

17-4 Stainless Steel Composition & Properties

Properties

Type 17-4%

Carbon

.07 max

Manganese

1.00 max

Phosphorus

.04 max

Sulfur

.03 max

Silicon

1.00 max

Chromium

15.50 – 17.50

Nickel

3.0 – 5.0

Copper

3.0 – 5.0

Columbium Plus Tantalulm

.15 – .45

Mechanical Properties

Properties

Annealed

H900

H1150

Tensile Strength, psi

150,000

200,000

154,000

Yield Strength, psi

110,000

185,000

125,000

Elongation in 2?

10%

14%

19%

Reduction of area

40%

50%

60%

Rockwell ?C? Hardness

34

44

33

Machinability

  • 17-4 stainless steel has a machinability rating of 48% in the annealed condition (Condition A), with surface cutting speed of 80 feet per minute.
  • In the overaged condition (H 1150-M), the machinability rating is 76% with surface cutting speed of 125 feet per minute.

Forging

  • Forge the stainless steel between 2050 and 2150° F.
  • Do not forge below 1850° F.
  • Forgings are air cooled to 90° F or lower.
  • Large or intricate forgings should be equalized at some temperature between 1900° F and the forging temperature before air-cooling.

Corrosion Resistance

  • The corrosion resistance of 17-4 stainless steel is superior to that of hardenable straight chromium grades such as T410.
  • It approaches the corrosion resistance of the chromium nickel grades.
  • In many corrosive media it is equal to such grades as Type 302.
  • Corrosion resisting properties will be affected by such conditions as surface finish and aging heat treatment.

Welding 17-4 Stainless Steel

  • Readily weldable by all the commercial processes.
  • Preheating and post-heating practices used for the standard hardenable stainless grades are not required.

If you don’t have 100% confidence in your current supplier or you are looking for a new one, let’s talk. 

When you partner with Wisconsin Metal Tech for your metal machining and supply needs you can count on quick turn around times, consistently on-time deliveries, and quality products.

We take pride in always going the extra mile for our customers because we are invested in your success.

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