17 4 Stainless Steel Hardness Chart

What s it all mean.

17 4 stainless steel hardness chart.

For applications requiring high strength and hardness plus corrosion resistance this alloy is an outstanding choice. Very high yield strength up to 1100 1300 mpa 160 190 ksi can be achieved. 17 chromium and 4 nickel. Excellent mechanical properties at a high strength level may be obtained by such treatment.

Table 2 typical mechanical properties property. Alloy 17 4ph is a precipitation hardening martensitic stainless steel with cu and nb cb additions. In addition it is more cost effective than many high nickel non ferrous alloys. 17 4 ph stainless steel mechanical properties ak steel 17 4 ph stainless steel provides excellent mechanical properties.

As sintered heat treated to h900 standard and heat treated to h1150 standard. 17 4 ph stainless steel 3 17 4 ph stainless steel provides excellent mechanical properties. Stainless steel grade chart atlas steels specialty steels product reference manual section 9. The grade combines high strength hardness up to 572 f 300 c and corrosion resistance.

17 4 provides an outstanding combination of high strength good mechanical properties at temperatures up to 600 f 316 c and short duration low temperature heat treatments that minimize warpage and scaling. 17 4 ph is a chromium nickel grade of stainless that may be hardened by a single low temperature precipitation hardening heat treatment. As with other precipitation hardening alloys al 17 4 pre cipitation hardening alloy is more susceptible to stress. It also can include between 3 and 5 copper.

Stainless steel grades are lumped into classes the main ones being austenitic ferritic and martensitic the metalworking powers that be developed these classes to consolidate chemical and mechanical properties into categories based on the needs of customers uses. The numbers 17 4 refer to its composition. 17 4 stainless steel also known as sae type 630 is a common and exceptionally durable type of steel used in a diverse variety of industries and applications. For applications requiring high strength and hardness plus corrosion resistance this alloy is an outstanding choice.

Mechanical properties can be optimized with heat treatment. In gen eral the corrosion resistance of al 17 4 alloy is supe rior to that of the hardenable 400 series stainless steels. Appendices printed november 2000 1 s9 chemical analysis specified grade uns no. Type 17 4 is the most common grade of martensitic precipitation hardenable ph alloys.

In addition it is more cost effective than many high nickel non ferrous alloys. Al 17 4 precipitation hardening alloy is comparable to that of type 304 stainless steel in most media.