15-7PH Stainless Steel Round Bar

15-7PH stainless steel round bar is a high-strength, precipitation-hardening martensitic stainless steel widely recognized for its exceptional mechanical properties and reliable corrosion resistance. Designed to perform in demanding environments, this material offers excellent toughness, hardness, and dimensional stability after heat treatment. With its superior strength-to-weight ratio, 15-7PH stainless steel is a preferred choice for aerospace components, automotive parts, industrial machinery, and marine equipment. Available in a wide range of diameters and finishes, our 15-7PH round bars ensure precise machining, long service life, and consistent performance in critical applications.

Specifications of 15-7PH SS round bar:

Specifications	AMS 5659 / AMS 5663 / AMS 5658
Grade	15-7PH,17-7PH,17-4PH,etc.
Length	1000 mm – 6000 mm or as requested
Diameter Range	10 mm – 200 mm (custom available)
Technology	Hot Rolled / Forged / Cold Drawn
Surface Finish	Bright, Peeled, Polished, Turned, Pickled
Form	Round, Square, Flat, Hexagonal

 

15-7PH round bar Equivalent Grades:

STANDARD	UNS
15-7PH	S15700

Chemical Composition 15-7PH stainless steel rod:

C	Cr	Cu	Mn	Ni	P	S
0.6-0.10	14.0-15.5	2.5-3.5	1.0	6.5-7.5	0.04	0.03

 

Mechanical Properties Of 15-7PH SS round bar:

Grade	Tensile Strength	Yield Strength	Elongation	Hardness
316LVM	1100-1400 MPa	930-1270 MPa	8-15%	28-42HRC

 

Applications of 15-7PH steel round bar:

• Aerospace: Landing gears, aircraft fittings, structural components, and fasteners where reliability under high stress is critical.

• Automotive: High-performance springs, shafts, and fasteners for vehicles requiring durability and precision.

• Industrial Machinery: Tooling, shafts, and mechanical components exposed to heavy loads or harsh environments.

• Marine & Chemical Processing: Components subjected to corrosive environments, including pumps, valves, and fittings.

• General Engineering: Precision machined parts, fixtures, and equipment requiring long-term stability and strength.

FAQ

Q1: What is 15-7PH stainless steel?
A: 15-7PH is a precipitation-hardening martensitic stainless steel known for its high strength, toughness, and excellent corrosion resistance. It is widely used in aerospace, automotive, and industrial applications.

Q2: What standards does 15-7PH stainless steel round bar comply with?
A: The most common standard is ASTM A693 / A693M. For aerospace applications, AMS 5659 / AMS 5663 may also apply. The UNS designation is S15700.

Q3: What are the typical mechanical properties of 15-7PH stainless steel?
A: After heat treatment, it offers tensile strength of 1,100–1,400 MPa, yield strength of 930–1,270 MPa, elongation 8–15%, and hardness 32–40 HRC.

Q4: Can 15-7PH stainless steel round bar be heat treated?
A: Yes, it achieves optimal performance through solution annealing (1,000–1,050°C) followed by water quenching, and age hardening (480–620°C) to enhance strength and hardness.

Q5: What are the typical applications of 15-7PH stainless steel round bar?
A: It is widely used in aerospace (landing gears, fittings), automotive (springs, fasteners), industrial machinery (shafts, tooling), marine equipment, chemical processing, and other high-performance engineering components.

Why Choose SAKYSTEEL :

Reliable Quality – Our stainless steel bars, pipes, coils, and flanges are manufactured to meet international standards such as ASTM, AISI, EN, and JIS. Strict Inspection – Every product undergoes ultrasonic testing, chemical analysis, and dimensional control to ensure high performance and traceability. Strong Stock & Fast Delivery – We maintain regular inventory of key products to support urgent orders and global shipping. Customized Solutions – From heat treatment to surface finish, SAKYSTEEL offers tailor-made options to match your exact requirements. Professional Team – With years of export experience, our sales and technical support team ensures smooth communication, quick quotations, and full documentation service.

SAKY STEEL'S Quality Assurance (including both Destructive and Non-Destructive) :

1. Visual Dimension Test 2. Mechanical examining like tensile, Elongation and reduction of area. 3. Impact analysis 4. Chemical examination analysis 5. Hardness test 6. Pitting protection test 7. Penetrant Test 8. Intergranular Corrosion Testing 9. Roughness Testing 10. Metallography Experimental Test

Custom Processing Capabilities:

• Cut-to-size service

• Polishing or surface conditioning

• Slitting into strips or foil

• Laser or plasma cutting

• OEM/ODM welcome

SAKY STEEL supports custom cutting, surface finish adjustments, and slit-to-width services for N7 nickel plates. Whether you need thick plates or ultra-thin foil, we deliver with precision.

SAKY STEEL'S Packaging:

1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging. 2. Saky Steel's pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,