• 17-4PH, 15.5PH

We are dealing with following PH Grades

  • 17.4 PH Stainless Steel
  • 15.5 PH Stainless Steel
  • GR 630
  • UNS S17400

17.4 PH

17.4 PH – Precipitation Hardened Stainless Steel 17.4 PH is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance, good mechanical properties at temperatures up to 600°F (316°C), good toughness in both base metal and welds, and short time, low-temperature heat treatments that minimize warpage and scaling. This versatile material is widely used in the aerospace, chemical, petrochemical, food processing, paper, and general metalworking industries.

Alloy Specifications17-4 PH17-4 SS17-4 Stainless SteelAISI 630AISI Type 630AISI Type S17400PH 17-4UNS S17400Alloy UNS S17400Custom 630Grade 630Type 63017Cr-4Ni17Cr-4Ni-3CuX5CrNiCuNb17-4-4Stainless Steel 17Cr-4NiVIRGO 17.4 PH AMS 5604AMS 5643AMS 7474ASME SA 705ASTM A 564ASTM SA 564ASTM A 693ASME SA 693ASTM A 705

Wire Flat Wire Round Wire Special Wire Shapes Square Wire
Custom ShapesForgings
INVENTORY FORMS
Rod, Flats, Square, Hex, Coil, Plate, Sheet, Strip, Foil, Tubes and Wire.17-4 PH sheet sizes: 17-4 PH Sheet SizesCompliance: Metals distributed by Ragavendra Eingineerng.

HEAT TREATMENT CHART
Condition Hardening Temp, Hardening Time Type of
± 9 °C (± 15 °F) (hours) Cooling
A Solution Treated at 1038 ± 14 °C (1900 ± 25°F)0.5 hr Oil,
Solution Treated at 1038 ± 14 °C (1900 ± 25°F)0.5 hr Oil,
H 900 482 °C (900 °F) 1 Air
H 925 496 °C (925 °F) 4 Air
H 1025 552 °C (1025 °F) 4 Air
H 1075 579 °C (1075 °F) 4 Air
H 1100 593 °C (1100 °F) 4 Air
H 1150 621 °C (1150 °F) 4 Air
H 1150-D 621 °C (1150 °F) 4 Air
621 °C (1150 °F) Followed by 4 Air
H 1150-M 760 °C (1400 °F) 2 Air
621 °C (1150 °F) Followed by 4 Air

15.5 PH

Stainless steels are sometimes referred to as high-alloy steels. These steels exhibit superior corrosion resistance in comparison to other steels due to their higher chromium content. Stainless steels are classified into three groups according to their crystalline structure. These are the martensitic, austenitic, and ferritic groups.

Precipitation-hardened steels are a fourth class of stainless steels comprised of martensitic and ferritic steels. Stainless steel grade 15.5 is a precipitation hardenable stainless steel. This steel exhibits excellent resistance to stress and general corrosion cracking, as well as high transverse toughness and strength, all of which are achieved through a single low temperature heat treatment.

  CHEMICAL COMPOSITION – 17.4 PH / 15.5 PH
C S P Mn Si Cr
Max Max Max Max Max  
0.07 0.010 0.04 1.00 1.00 14.00-15.00
0.07 0.030 0.04 1.00 1.00 15.00-17.00
     C=CARBON   Si=SILICON     Mn=MANGANESE    P=PHOSPHOROUS   S=SULPHUR    Cr=CHROMIUM   Mo=MOLYBDENUM
     Ni=NICKEL    N=NITROGEN   Zr=ZIRCONIUM   Ti=TITANIUM   Cb=COBALT   Ta=TANTALUM    AI=ALUMINIUM
MINIMUM MECHANICAL PROPERTIES
Property H 900 H 925 H 1025 H 1075 H 1100 H 1150 H 1150D H 1150M
UTS, 1310 (190) 1170 (170) 1070 (155) 1000 (145) 965 (140) 930 (135) 860 (125) 795 (115)
MPa (ksi)
0.2% YS, 1170 (170) 1070 (155) 1000 (145) 860 (125) 795 (115) 725 (105) 725 (105) 520 (75)
MPa (ksi)
Elongation % 10 10 12 13 14 16 16 18
Reduction of 40 44 45 45 45 50 50 55
Area %
Brinell 388 375 331 311 302 277 255 255
Hardness
Rockwell C40 C38 C35 C32 C31 C28 C24 C24
Hardness
Impact, Charpy — 7 (5) 20 (15) 27 (20) 34 (25) 41 (30) 41 (30) 75 (55)

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