Stainless Steel 15-5 PH Round Bar
➡️ SS 15-5 PH | UNS S15500 | EN 1.4545
➡️ ASTM, EN, JIS & International Standards
➡️ Supply Conditions
➡️ Multiple Diameters & Supply Lengths
➡️ Global Export & International Delivery
Country of Origin:
Europe, Japan, USA
Material Type:
Stainless Steel
UNS Number:
S15500
Wr. No.:
1.4545
MTC Available:
EN 10204 3.1
Product Description for Stainless Steel 15-5 PH Round Bar
Stainless Steel 15-5 PH Round Bar carries the UNS number S15500 and the material number 1.4545. Bar is supplied to ASTM A564 / A564M (Type XM-12); tolerances, straightness and finish come from ASTM A484 / A484M. EN and GB/T list an equivalent grade. JIS and KS do not.
The grade is a copper-strengthened precipitation-hardening stainless steel closely related to 17-4 PH, but with a chemistry balanced to be essentially ferrite-free. Removing delta ferrite improves transverse toughness and ductility, which is why the grade is preferred for aerospace forgings and heavy sections where properties across the grain matter.
Supply is in the solution annealed (Condition A) or precipitation hardened (H900 to H1150) condition, in diameters between 3 mm and 500 mm and random lengths of 3 to 6 m; larger diameters are forged and cut lengths are available. Surface options run from hot finished and pickled through cold drawn, peeled and turned to ground and polished. Strength is developed by a low-temperature precipitation-hardening (ageing) treatment carried out after machining.
Fabricators use it for structural forgings, landing gear parts, valve components and heavy machined sections across aerospace, defence, oil and gas, nuclear and power generation. Material normally ships against an EN 10204 3.1 certificate showing heat analysis, mechanical results and delivery condition. The melting range is roughly 1404 – 1440 C. The bar is ferromagnetic in every condition. Density is around 7.80 g/cm3 and the modulus of elasticity about 196 GPa. Third party inspection, positive material identification and non-destructive examination can be added at order stage.
Common Applications of Stainless Steel 15-5 PH Round Bar
➡️ Machined shafts, spindles, valve stems, pump sleeves and pins for food, beverage, dairy and pharmaceutical equipment, where the passive chromium oxide film resists both product acids and caustic clean-in-place chemicals.
➡️ Fasteners, studs, bolts, threaded rod and anchor components produced from bar stock, chosen for corrosion resistance combined with the ductility needed for cold heading and thread rolling.
➡️ Chemical, water treatment and general process plant parts such as agitator shafts, flange blanks, nozzles and support components handling water, steam and mildly corrosive media free of significant chlorides.
➡️ Architectural and structural hardware including handrail stanchions, balustrade fittings, tension rods and bollards, where a bright ground or polished bar finish provides both appearance and low maintenance.
International Equivalent Grade for SS 15-5 PH Round Bar
Standard
Country / Region
Grade
ASTM A564 / A564M (Type XM-12)
USA
UNS S15500 - Type XM-12 (15-5 PH)
ASME SA-564
USA
UNS S15500 - Type XM-12 (15-5 PH)
EN 10088-3
Europe / EU
1.4545 (X5CrNiCu15-5)
BS EN 10088-3
United Kingdom
1.4545 (X5CrNiCu15-5)
JIS G4303
Japan
No equivalent grade listed in JIS G4303
GB/T 1220
China
05Cr15Ni5Cu4Nb
KS D 3706
South Korea
No equivalent grade listed in KS D 3706
ISO 15510
International
X5CrNiCu15-5
Technical Specification for Stainless Steel 15-5 PH Round Bar
Specification
Value
Unit
Material
Stainless Steel
-
Grade
15-5 PH / UNS S15500 / W.Nr. 1.4545
-
Product Form
Round Bar / Rod
-
Standard
ASTM A564 / A564M (Type XM-12)
-
Diameter
3 - 500 (larger by forging on request)
mm
Length
3 - 6 (random mill length) or cut to length
m
Manufacturing Process
Hot rolled, forged or cold finished
-
Production Route
EAF + AOD / VOD refining, continuous cast or ingot, hot rolled or forged
-
Surface Finish
Hot-finished and pickled, cold-drawn, peeled, turned, ground or polished
-
Heat Treatment / Delivery Condition
Solution annealed (condition a) or precipitation hardened (h900 to h1150)
-
Tolerance Standard
ASTM A484 / A484M
-
Carbon Equivalent (CEV)
Not applicable (CEV applies to carbon and low-alloy steels)
-
Density
7.80 (nominal)
g/cm3
Melting Range
1404 - 1440 (typical)
C
Thermal Conductivity at 100 C
17.8 (typical)
W/m.K
Coefficient of Thermal Expansion (0-100 C)
10.8 (typical)
10-6/K
Specific Heat (0-100 C)
460 (typical)
J/kg.K
Electrical Resistivity at 20 C
0.77 (typical)
micro-ohm.m
Modulus of Elasticity at 20 C
196 (typical)
GPa
Magnetic Properties
Ferromagnetic in all conditions
-
Applicable Testing / Inspection Standard
ASTM A370 (mechanical testing), ASTM E18 / E10 (hardness)
-
Certification / Inspection Documents
EN 10204 3.1 mill test certificate standard, 3.2 third-party, PMI, ultrasonic and dye-penetrant examination available on request
-
Technical Specifications
Get the key technical specifications for Stainless Steel 15-5 PH Round Bar
Orders are normally placed to ASTM A564 / A564M (Type XM-12), with ASTM A484 / A484M carrying the dimensional side. European practice specifies the same steel to EN as 1.4545 (X5CrNiCu15-5). Whichever it is, the standard, the condition and any extra testing belong on the purchase order.
Bar is supplied in Condition A, solution treated at approximately 1040 C and air cooled. Single-step ageing between 480 C and 620 C sets the final strength, using the same H900 to H1150 designations as 17-4 PH.
Bar reaches its finish two ways: hot rolling or forging followed by heat treatment and pickling, or a further cold operation such as drawing, peeling, turning or grinding. Tolerances on diameter, out of round, straightness and length depend on both size and finish class.
The absence of delta ferrite is achieved through a tighter chromium and nickel balance and consumable-electrode remelting, which also improves cleanliness and transverse property consistency in large sections.
Treat the physical properties as typical producer figures; the standard does not set them. Mechanical testing follows ASTM A370 and everything tested appears on the certificate.
Chemical Composition for Stainless Steel 15-5 PH Round Bar
Element
Symbol
Min
Max
Unit
Carbon
C
-
0.07
%
Manganese
Mn
-
1.00
%
Silicon
Si
-
1.00
%
Phosphorus
P
-
0.040
%
Sulfur
S
-
0.030
%
Chromium
Cr
14.00
15.50
%
Nickel
Ni
3.50
5.50
%
Copper
Cu
2.50
4.50
%
Niobium + Tantalum
Nb + Ta
0.15
0.45
%
Chemical Composition
View the chemical composition and applicable material limits for SS 15-5 PH Round Bar
Chromium is reduced to 14-15.5% and nickel raised to 3.5-5.5% relative to 17-4 PH, which suppresses delta ferrite. Copper at 2.5-4.5% remains the precipitation hardener and niobium stabilises carbon.
Chromium runs 14.00 to 15.50% here, and it is what makes the steel stainless: it builds the passive oxide film that resists attack. Nickel at 3.50 to 5.50% stabilises the structure and improves ductility and toughness. The standard also fixes copper 2.50 to 4.50%, niobium + tantalum 0.15 to 0.45%. Carbon is capped at 0.07%.
Manganese and silicon go in as deoxidisers during melting and add a little strength. Phosphorus and sulphur are residuals, held low because they hurt hot working, welding and corrosion resistance; sulphur is raised only when a free machining variant is wanted.
Limits differ a little between the ASTM, EN, JIS, GB/T and KS versions. That usually makes no practical difference, but it can in aggressive or high temperature duty, which is why the certified heat analysis is worth reading against the ordered specification. Chemical analysis is carried out to ASTM A751. Where the composition table shows no limit for an element, the standard sets no requirement and the element need not be determined or reported.
Mechanical Properties for Stainless Steel 15-5 PH Round Bar
Mechanical Property
Value
Unit
Hardness (Condition A, solution annealed)
363 (max) / 38 HRC (max)
HBW
Tensile Strength (H900)
1310 (min)
MPa
Yield Strength 0.2% (H900)
1170 (min)
MPa
Elongation in 50 mm (H900, longitudinal)
10 (min)
%
Reduction of Area (H900, longitudinal)
35 (min)
%
Hardness (H900)
40 HRC / 388 HBW (min)
-
Tensile Strength (H1025)
1070 (min)
MPa
Yield Strength 0.2% (H1025)
1000 (min)
MPa
Elongation / Reduction of Area (H1025)
12 / 45 (min)
%
Tensile Strength (H1150)
930 (min)
MPa
Yield Strength 0.2% (H1150)
725 (min)
MPa
Elongation / Reduction of Area (H1150)
16 / 50 (min)
%
Modulus of Elasticity
196 (typical)
GPa
Mechanical Properties
Check the key mechanical properties and performance requirements of SS 15-5 PH Round Bar
Strength levels match 17-4 PH, with 1310 MPa minimum tensile in H900, but transverse ductility and toughness are consistently better because the structure is free of delta ferrite stringers.
Everything depends on the ageing treatment applied after solution treatment. A low ageing temperature buys strength and hardness; a higher one trades them for toughness and resistance to stress corrosion cracking. Results are certified against the ordered condition, tested to ASTM A370 and ASTM E18.
Design to the minima of the ordered standard and condition; the certificate carries what the heat actually achieved. Bar diameter has an effect of its own, through cooling rate in heat treatment and the amount of working the section received.
This combination of very high strength with useful corrosion resistance and low distortion during hardening is why the grade is selected for highly loaded aerospace, subsea and rotating machinery components. Fatigue performance is good, but notch sensitivity rises with strength level, so higher ageing temperatures are often specified where impact or stress corrosion resistance matters more than peak strength.
Dimension / Sizes for Stainless Steel 15-5 PH Round Bar
Dimension / Size
Value
Unit
Diameter (standard supply range)
3 - 500 (larger by forging on request)
mm
Standard Length
3 - 6 (random mill length)
m
Custom Length
Cut to length available on request
-
Diameter Tolerance
Per ASTM A484 / A484M, varies with size and finish class
-
Length Tolerance
Per ASTM A484 / A484M or as agreed on the order
-
Straightness Tolerance
Per ASTM A484 / A484M or as agreed on the order
-
End Condition
Square cut, saw cut, chamfered or as ordered
-
Surface Finish
Hot-finished and pickled, cold-drawn, peeled, turned, ground or polished
-
Available Size Range (cold-finished bar)
3 - 100 (typical commercial capability)
mm
Available Size Range (hot-finished and forged bar)
16 - 500 (typical commercial capability)
mm
Cut-to-Length Availability
Available, tolerance to be agreed at order stage
-
Applicable Dimensional Standard
ASTM A484 / A484M
-
Dimensions & Sizes
Explore available diameters, lengths, and dimensional requirements for SS 15-5 PH Round Bar
Pricing for Stainless Steel 15-5 PH Round Bar
Round Bar Prices are generally quoted per kilograms or meters tonnes and can fluctuate with the global raw material and market prices. The final price will depend on a variety of factors, including the grade size, diameter, length, surface finish, the quantity and whether the bars are cut to length or in standard lengths.
For smaller quantities, we can also quote per metre or per piece basis once the required dimensions have been confirmed. Container-loads or orders that are larger in size are typically priced per tonne, based upon the specifications required and the supply conditions.
Please provide your desired dimensions, grades, length number, and end for a current quote including the lead time applicable and details for certification.
Pricing
Get current Stainless Steel 15-5 PH Round Bar pricing based on size, quantity, grade, finish, and delivery requirements.
Why Choose Us
Euro Steel Bars is an international distributor, stockist and exporter of stainless round steel bars that cover carbon, stainless alloy, special grades. We stock a variety of sizes and grades. We guarantee every order with mill test certificates as well as full quality-assurance documentation. Our name speaks to our roots: European-sourced materials that is backed by the certificates and rigor that buyers from Asia as well as the Gulf and Africa are looking for.
Each bar we deliver is accompanied by EN 10204 3.1 mill test certificates as well as complete documentation of quality, so what you receive corresponds to what’s written in the documents. We carry a selection of sizes and grades ready for transport, and cut length upon the request of customers, which results in quicker lead times, whether you’re ordering just a one-off spec or a complete project tonnage.
We operate an actual wholesale business that is that is supported with an internationally-operated supply chain therefore we are able to serve fabricators sourcing one grade the same way in the same way as an EPC contractor who is placing a large order. Our clients include manufacturers, fabricators EPC construction companies, engineers oil and gas projects as well as construction companies. we design our inventory as well as documentation to show what buyers need to bring projects forward.
Our customers trust us across Qatar, Oman, Bahrain, Kuwait, Jordan, Malaysia, Singapore, Thailand, Taiwan, Turkey, Italy and South Africa. If you’re looking to source an Gulf energy project, or a construction project within Southeast Asia, you get the same quality of certified material, the exact documentation, and the exact delivery procedure.
Frequently Asked Questions
What is Stainless Steel 15-5 PH Round Bar?
What standard does Stainless Steel 15-5 PH Round Bar comply with?
What are the equivalent grades of Stainless Steel 15-5 PH Round Bar?
What sizes and lengths are available in Stainless Steel 15-5 PH Round Bar?
What are the key mechanical properties of Stainless Steel 15-5 PH Round Bar?
What is the typical chemical composition of Stainless Steel 15-5 PH Round Bar?
Can Stainless Steel 15-5 PH Round Bar be supplied cut to length or with a specific surface finish?
What is the difference between 15-5 PH and 17-4 PH round bar?
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