What is 17 7ph stainless steel?
What is 17 7ph stainless steel?
A stable, chromium-nickel-aluminum steel, 17-7 is a precipitation hardening steel with a high strength and moderately resistant to corrosion. In terms of corrosion resistance, 17-7 PH is comparable to 304 stainless steel and a better choice when compared to the 400 series of stainless steel.
What is the annealed condition?
What is the “Annealed” Condition? Stainless Steel is usually sold in the “annealed” condition. It means that the material is in the “soft” or annealed condition. The 300 series of stainless can not be hardened by heat treatment (like carbon steels) but can be hardened by cold working.
How do you heat treat 17-7 stainless steel?
ATI 17-7 precipitation hardening alloy is furnished as plate, sheet and strip from ATI. In all forms, the material is furnished in the annealed condition. In strip form, the material may be provided in a cold rolled condition suitable for direct precipitation hardening heat treatment at 900°F (482°C).
What does ph stand for in stainless steel?
PH stainless steels are a group of alloys that are resistant to the effects of corrosion. To increase their yield strength, these alloys are subjected to heat treatment during precipitation hardening (PH) or age hardening. You must be wondering what all these terminologies mean.
What type of material is 17-4PH?
Alloy 17-4PH (UNS S17400), Type 630, is a chromium-nickel-copper precipitation-hardening martensitic stainless steel with an addition of niobium. 17-4PH combines high strength and hardness with good corrosion resistance.
What does the PH stand for in 17-4PH?
PH stainless steels are a group of alloys that are resistant to the effects of corrosion. To increase their yield strength, these alloys are subjected to heat treatment during precipitation hardening (PH) or age hardening.
What is annealing DNA?
DNA annealing refers to heteroduplex formation from two complementary (or nearly complementary) molecules or regions of single-stranded DNA (ssDNA) (Fig. 1A). DNA annealing may occur spontaneously, but it is promoted in vivo by certain classes of annealing proteins.
What is purpose of solution annealing?
Solution Annealing is a heat treatment process which alters the metallurgical structure of a material to change its mechanical or electrical properties. Typically, this process is used to decrease metal crack sensitivity of aged material that needs to be returned to a weldable state.
How do you heat treat 17-7?
How do you anneal 17-7 PH stainless steel?
Annealing of stainless steel grade 17-7 PH is performed at 1066°C (1950°F) for 3 min for every 0.1 inch (2.5 mm) of thickness, and then air cooled. Stainless steel grade 17-7 PH is solution annealed at 1177°C (2150°F) for 4 h and air cooled.
What is the annealing condition for Al 17 4?
The AL 17-4 Precipitation Hardening Alloy is furnished in the annealed condition. This is also called the solu- tion heat treated condition, or Condition A. Annealing is conducted by heat treating at approximately 1900°F (1040°C) to 1950°F (1065°C) and cooling to room tem- perature.
What is precipitation hardening stainless steel?
Precipitation hardening stainless steel alloys are available in one of two conditions – annealed (condition A) or tempered (condition C). The annealed alloys, with Rockwell hardnesses in the broad range of B75 to C20, are relatively soft and formable. After forming, parts can be age-hardened to Rockwell C35 to C49.
What are the characteristics of stainless steel grade 17-7 pH?
Forming characteristics of stainless steel grade 17-7 PH are similar to stainless steel grade 301. For radical forming operations, intermediate annealing may be required. Common arc and resistance methods can be used with stainless steel grade 17-7 PH.
