15-5PH Stainless Steel Bar, Plate in Stock

What is 15-5PH Stainless Steel?

15-5 PH (precipitation-hardening) stainless steel is a high-strength, high-toughness martensitic alloy whose properties can be further enhanced through heat treatment. Essentially a variant of 17-4 PH stainless steel, it is designed to improve transverse (thickness direction) toughness and can be fabricated into various practical product forms, including plates, coils, tubes, bars, and wires. Therefore, it is ideally suited for critical components in aerospace, oil and gas, and general industrial applications, such as fasteners, gears, shafts, and engine parts.

 

What is 15-5 PH material equivalent to?
15-5 PH stainless steel is a very common material for aerospace components. According to the EN standard, this grade is designated as 1.4545 or 1.4548 or X5CrNiCuNb15-5; according to the UNS standard, it is designated as UNS S15500. We can consider 15-5 PH stainless steel to be an improved version of 17-4 PH (630 - 1.4542) material.

 

15-5PH Stainless Steel Specifications

Standard	AMS 5659, AMS 5823, AMS 5862, ASTM A564 / A564M, ASTM A693
Grade	0Cr15Ni5Cu4Nb, 1.4545, S15500
Length	1000 mm-6000 mm (39.37-236.22 in), Customized
Diameter	Bar: 6 mm-300 mm (0.24-12 in), Customized
Thinckness	Customized, Plate: 6 mm-100 mm (0.24-3.94 in), Sheet: 0.5 mm-6 mm (0.02-0.24 in)
Full Width	Customized, Sheet & Plate: 1000 mm-2000 mm (39.37-78.74 in)
Surface Finish	2B, 2D, BA, Coated, etc., Ground, Mill, No.1, No.4, Peeled, Polished, Turned

 

Chemical Compositions

Chromium (Cr)	Nickel (Ni)	Copper (Cu)	Manganese (Mn)	Silicon (Si)	Carbon (C)	Phosphorus (P)	Sulfur (S)	Nitrogen (N)
14.0 – 15.5	3.5 – 5.5	2.5 – 4.5	1.0 max	1.0 max	0.07 max	0.04 max	0.03 max	0.10 max

 

Mechanical Properties

Properties	Metric Unit	Imperial Unit
Tensile Strength	1000-1170 MPa	145-170 ksi
Yield Strength	≥ 1000 MPa	≥ 145 ksi
Vickers Hardness	360 HV (typical)	360 HV (typical)
Brinell Hardness	350 HB (typical)	350 HB (typical)
Rockwell Hardness	35 HRC (typical)	35 HRC (typical)
Elongation	≥ 10%	≥ 10%
Elastic Modulus	200 GPa	29.0 x 10³ ksi

 

Precipitation Hardening: Applicable to 15-5PH Bar, Plate and Sheet.

H900: 482°C (900°F), hold for 1 hour, then air cool.

H925: 496°C (925°F), hold for 4 hours, then air cool.

H1025: 552°C (1025°F) for 4 hours, then air cool.

H1075: 579°C (1075°F) for 4 hours, then air cool.

H1150: 621°C (1150°F) for 4 hours, then air cool.

 

15-5 PH stainless steel price per kg

As of December 2025, the price of 15-5 PH stainless steel (UNS S15500) varies depending on the product form and order quantity: Domestic prices for bars are 65–75 RMB/kg (65 RMB/kg for orders of 1000 kg and above, 70 RMB/kg for orders of 100–999 kg, and 75 RMB/kg for orders of 1–99 kg), with FOB export prices ranging from US$5.20–8.84/kg; domestic prices for plates are 70–80 RMB/kg, with FOB export prices ranging from US$6.00–9.50/kg; domestic prices for 3D printing powder are 180–220 RMB/kg, with FOB export prices ranging from US$22.00–28.00/kg. Small-batch custom orders require an additional 10%–15% surcharge.

 

Gnee offers 15-5 PH stainless steel bars and plates that conform to ASTM A564 and AMS 5659 standards. This material is a precipitation-hardening stainless steel, particularly suitable for aerospace, chemical, and high-temperature applications.

Our products: 15-5PH round bar, 15-5PH flat bar, 15-5PH square bar, 15-5PH plate, 15-5PH sheet, 1.4545 cold rolled plate, 15-5PH hot rolled sheet, S15500 rectangular bar, 15-5PH cold drawn bar, 15-5PH precision ground bar, 15-5PH forged bar, 15-5PH polished plate, 15-5PH tempered sheet, etc.

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Packaging and Shipping:
All products are packaged in moisture-proof packaging to ensure product integrity during transportation.
Standard delivery time is typically 7 to 15 business days, with specific delivery times depending on order quantity and processing requirements.