15-5 Stainless Steel PH Forgings (UNS S15500)

Anderson Shumaker forgings 15-5 stainles steel in house in a variety of shapes including round and flat bars, rings, discs and more. A martinsitic precipitation hardening steel, 15-5 PH stainless steel offers high strength combined with excellent corrosion resistance. Similar to 17-4 in properties, 15-5 PH (VAR) (generally vacuum arc re-melted) is more chemically balanced to reduce the amount of delta ferrite which enhances its transverse properties.

Applications: Used when high transverse strength is required. Valve parts, Paper mills, aircraft and power generation, chemical processing, nuclear and space craft.

Heat Treatment: Solution heat treatment, heat at 1900f +/- 25f (1038c +/- 14c) cool to below 90f (32c) to allow material to fully martensite. Small sections under 3” may be oil cooled, sections larger should be rapidly air cooled (fan cooling). Parts should not be used in this condition, they should be age hardened between 900f and 1150f. Toughness, impact strength as well as stress corrosion cracking may occur without aging.

Aging: All solution treated materials: Condition H-900 1hr and air cool. H-925 through H-1150 four hours +/- 25f and air cool. For condition H1150M 1400f +/- 15f 2 hours air cool, then heat at 1150f +/- 15f for four hours and air cool.

Corrosion Resistance

The following table is for reference only, many factors can affect the corrosive resistance, a corrosion test for each application should be applied.

Phosphoric acid Moderate Acetic Acid Moderate
Sodium Hydroxide Moderate Sea Water Restricted
Salt Spray Moderate Nitric Acid Good
Sulfuric Acid Moderate Humidity Excellent

Chemistry Analysis

Carbon max 0.07% Manganese max 1.00%
Phosphorus max 0.04% Sulfur max 0.030%
Silicon max 1.0% Chromium 14.00 – 15.50%
Nickel 3.50% – 5.50% Columbium +Tantulum 0.15 – 0.45%
Iron Balance Copper 2.50 – 4.50%

Typical Room Temperature Tensile Properties

Solution treated 1900f (1038c) and air cooled, followed by tempering at indicated temperature, longitudinal direction.
Temper Temperature Yield 0.2% Yield 0.2% Ultimate Tensile Strength %Elongation in 2″ {50.8mm} hardness Brinell % Reduction of Area Charpy V-notch
0.2% offset 0.2% offset ft-lb j
F ksi mpa ksi Mpa
H900 185 1276 200 1378 14 420 50 15 20
H925 175 1207 190 1309 14 409 54 25 34
H1025 165 1138 170 1173 15 352 58 25 34
H1075 150 1035 165 1138 16 341 58 45 61
H1100 135 931 150 1035 17 332 58 45 61
H1150 125 862 145 1000 19 311 60 50 68
H1150M 85 564 125 862 22 277 68 100 136
15-5 PH machines easily in the solution treated or aged condition. Machines similar to 304 stainless steel. Machinability will imrove as the aging temperature is increased. Condition H1150M is the optimum machining condition.
AMS 5659 AMS 2300 ASTM A564 ASTM A705 ASME A705 EN10204 DIN3.1B
303 Stainless machines easily with a brittle chip. Grinding and polishing are possible with 303 Stainless with satisfactory results. Our forging operation can increase the results for polishing this grade.
AMS 5640 ASTM A473 ASTM A582 EN10204 DIN3.1B
Shapes Manufactured:
Flat Bars, Square Bars, Round Bars, Rings, Hollows, Discs, Blocks and special Shapes. Send us a drawing to see how we can save you material and machining time!

The information in this data sheet is for information only and should not be used for engineering.