How hard is H900?
It is one of the most widely used precipitation hardening grades, as it has high strength hardness up to about 572°F while demonstrating good corrosion resistance in all heat treated conditions. Its mechanical properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved.
What is the Rockwell hardness of 17-4 H900?
190,000
17-4 PH Stainless Steel Properties
| Condition | Ultimate Tensile Strength (PSI) | Hardness Rockwell |
|---|---|---|
| H900 | 190,000 | C40 |
| H1025 | 155,000 | C35 |
| H1075 | 145,000 | C32 |
| H1150 | 135,000 | C28 |
Can you machine 17-4 H900?
Machining: Machining 17-4PH Condition A has machining characteristics similar to stainless grades 302, 304 and 410. The high hardness and strength in Condition H900 is the most difficult to machine and the material should be machined at 60% of the rate used for Condition A.
Will 17 4PH rust?
The martensitic PH stainless grades like 17-4 and 15-5 will also rust. Note that Alloy 36 (36% NI, balance iron) will readily rust. It is not a stainless steel, since it has no chromium. These alloys are commonly delivered from the mill with a light rust or dark oxide on the surface.
What is H900 condition?
Typical heat treat designations are H900 or H1075; where H900 indicates aging at 900°F for one hour and H1075 indicates ageing at 1075°F for 4 hours. In all cases, it is important to start with material that is in the solution treated condition or more commonly called Condition A.
Can 17-4 be hardened?
Properties. 17-4 can be heat treated to high levels of strength and hardness, and features corrosion resistance and machinability comparable to austenitic 304 stainless. Being martensitic, 17-4 is magnetic. 17-4 is capable of being hardened up to approximately 44 Rc when heat treated to condition H900.
What is H1150 condition?
Stainless steel 17-4 H1150 is stainless steel grade 17-4, also known as 630 alloy, that has been heat treated at a temperature between 1140° F and 1160° F for 3.75 hours to 4.25 hours. The steel will become softer than it is in the annealed condition after being treated at such a high temperature.
Will 410 SS rust?
Some grades of stainless steel will form light rust when exposed to mild atmospheric conditions. Most 400 series stainless steels fall into this category and it is particularly true of type 410 which only contains about 11% chromium. The martensitic PH stainless grades like 17-4 and 15-5 will also rust.
What is AMS 5643 hardening?
PRODUCT DESCRIPTION AMS 5643 (UNS S17400) is an American aerospace grade which may be hardened by a single low temperature precipitation hardening treatment and contains 4% copper. After treatment, AMS 5643 offers excellent mechanical properties at a high strength level.
What is the tensile properties of AMS 5643?
17-4 Stainless AMS 5643 Hardness & Minimum Tensile Properties: Condition Tensile Yield 0.2% offset Elongation (%in 2″) Rockwell Hardness H900 190 ksi 170 ksi 10% 40-47 HRC H925 170 ksi 155 ksi 10% 38-45 HRC H1025 155 ksi 145 ksi 12% 34-42 HRC H1075 145 ksi 125 ksi 13% 31-38 HRC
What are the specifications of the H900 heat treated rod?
Heat Treatment: Hardened Temper: H900 Specifications Met: ASTM A564, SAE AMS5643 Hardened for improved strength and wear resistance, these rods are precision ground to a strict diameter tolerance.
What is the temperature range for h1150 steel?
This grade is readily forged, hot headed, or upset in the range 2050° F and 2200° F, and not below 1850° F. It is usually solution treated after hot work prior to precipitation hardening. This material machines well in the Solution Treated (Annealed) condition, and about 50% better in Cond H1150.
