17-4PH Round Bar | ASTM A564 Type 630 UNS S17400 Manufacturer in India
17-4PH Round Bar is one of the most widely used precipitation-hardening stainless steel bars for applications that demand high strength, excellent corrosion resistance, and dimensional stability. Known globally as 17-4 PH Stainless Steel Round Bar or UNS S17400 Bar, this alloy offers an ideal balance of mechanical performance and ease of fabrication.
We manufacture and supply a complete range of 17-4 PH Stainless Steel Round Bar, Rods, Flat Bars, Hex Bars, Square Bars, Forged Bars, and Hollow Bars in accordance with ASTM A564 Type 630, ASME SA 276, AMS 5643, AISI, DIN 1.4542, and SUS 17-4PH standards. With decades of hands-on industry experience, we understand how this material performs in real-world service conditions—not just on paper.
What is Stainless Steel 17-4PH?
Stainless Steel 17-4PH is a martensitic precipitation-hardening stainless steel containing chromium, nickel, and copper. The “PH” stands for precipitation hardening, a heat-treatment process that significantly increases strength and hardness.
Unlike conventional stainless steels, Nickel 17-4PH Stainless Steel / 17-4PH® – Bar can be heat-treated to different strength levels without losing corrosion resistance. This makes it ideal for aerospace, oil & gas, marine, chemical, and industrial engineering applications.
Common global designations include:
- UNS S17400 Bar
- ASTM A564 TYPE 630 UNS S17400 Round Bar
- AISI 17-4 PH
- DIN 1.4542
- SUS 17-4PH
- AMS 5643 Steel 17-4 PH Round Bar
Why Choose 17-4PH Round Bar?
From our manufacturing and supply experience, customers choose 17-4PH SS Industrial Bars for these reasons:
- High tensile and yield strength
- Good corrosion resistance comparable to 304 stainless steel
- Excellent fatigue resistance
- Good machinability in the solution-annealed condition
- Minimal distortion after heat treatment
- Performs well in harsh environments
These qualities make 17-4PH Hot Rolled Round Bar and 17-4PH Cold Finish Round Bar suitable for both heavy-duty and precision components.
Range of 17-4PH Stainless Steel Bars We Offer
We supply a full portfolio to meet varied engineering needs:
- 17-4PH Round Bar: Our 17-4PH Round Bar is available in hot-rolled, cold-drawn, polished, and bright-finish forms. Sizes range from small diameters to large forged sections.
- Stainless Steel 17-4 PH Rod: Precision-manufactured Stainless Steel 17-4 PH Rods are widely used in shafts, fasteners, and aerospace components requiring tight tolerances.
- SS 17-4 PH Flat Bar: SS 17-4 PH Flat Bar and 17-4PH Flat Bar are used in structural parts, tooling, and fabricated assemblies where strength and flatness are critical.
- AISI 17-4 PH Hex Bar: Our AISI 17-4 PH Hex Bar and Stainless Steel 17-4PH Hex Bar are ideal for nuts, bolts, and high-strength fasteners.
- Stainless Steel DIN 1.4542 Hexagonal Bars: Manufactured as per European standards, DIN 1.4542 Hexagonal Bars are popular in export markets.
- A564 630 Square Bar: We produce A564 630 Square Bar for tooling, dies, and machined components.
- A705 Type 630 Rectangular Bar: A705 Type 630 Rectangular Bar is used in heavy structural and pressure-bearing applications.
- A564 GR 630 17-4PH Forged Bar: Our A564 GR 630 17-4PH Forged Bar provides superior internal soundness and grain structure for critical applications.
- A564 GR 630 Hollow Bar: A564 GR 630 Hollow Bar helps reduce machining time and material wastage for bored components.
- 17-4PH Polished Bar & Bright Bar: We stock 17-4PH Polished Bar and Stainless Steel 17-4PH Bright Bar Stockists grade material for applications requiring excellent surface finish.
Heat Treatment Conditions of 17-4PH
One of the biggest advantages of 17-4PH Stainless Steel Round Bar is its flexibility in heat treatment:
- Solution Annealed (Condition A) – Best for machining
- H900, H1025, H1075, H1150 – Increasing toughness with controlled strength
We help customers select the right condition based on actual service requirements, not generic recommendations.
UNS S17400 Round Bar – Manufacturing Standards & Specifications
We manufacture and supply material strictly as per international norms:
- ASTM A564 Type 630 Rod
- ASTM A564 UNS S17400 Rod
- ASME SA 276 SS 17-4PH Rods
- AMS 5643 Steel 17-4 PH Round Bar
- AISI 17-4 PH
- DIN 1.4542
- SUS 17-4PH
Each ASTM A564 TYPE 630 UNS S17400 Round Bar undergoes strict quality checks including chemical analysis, mechanical testing, and dimensional inspection.
Mechanical Properties of 17-4PH Stainless Steel
Condition H900 (High Strength)
| Property | Value |
| Tensile Strength | ≥ 1310 MPa |
| Yield Strength (0.2% Offset) | ≥ 1170 MPa |
| Elongation | ≥ 10% |
| Reduction of Area | ≥ 40% |
| Hardness | 40 – 44 HRC |
Condition H1025 (Balanced Strength & Toughness)
| Property | Value |
| Tensile Strength | ≥ 1070 MPa |
| Yield Strength | ≥ 1000 MPa |
| Elongation | ≥ 12% |
| Hardness | 35 – 38 HRC |
Condition H1150 (Higher Toughness)
| Property | Value |
| Tensile Strength | ≥ 860 MPa |
| Yield Strength | ≥ 725 MPa |
| Elongation | ≥ 16% |
| Hardness | 28 – 32 HRC |
UNS S17400 Bar – Specifications Table
| Parameter | Details |
| Material Grade | Stainless Steel 17-4PH |
| UNS Number | UNS S17400 |
| ASTM Standard | ASTM A564 |
| ASME Standard | ASME SA 564 |
| AISI Equivalent | AISI 17-4 PH |
| DIN / EN | DIN 1.4542 |
| JIS | SUS 17-4PH |
| AMS Standard | AMS 5643 |
| Product Forms | Round Bar, Flat Bar, Hex Bar, Square Bar, Hollow Bar, Forged Bar |
| Manufacturing Process | Hot Rolled, Cold Drawn, Cold Finished, Forged |
| Heat Treatment Conditions | Solution Annealed (Condition A), H900, H1025, H1075, H1150 |
| Surface Finish | Black, Bright, Polished, Turned |
| Size Range | As per ASTM / Customer Requirement |
| Testing | Chemical, Mechanical, PMI, UT (if required) |
| Certification | EN 10204 3.1 / 3.2 |
Chemical Composition of 17-4PH Stainless Steel (% by Weight)
| Element | Composition (%) |
| Carbon (C) | ≤ 0.07 |
| Chromium (Cr) | 15.0 – 17.5 |
| Nickel (Ni) | 3.0 – 5.0 |
| Copper (Cu) | 3.0 – 5.0 |
| Manganese (Mn) | ≤ 1.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Niobium + Tantalum (Nb + Ta) | 0.15 – 0.45 |
| Iron (Fe) | Balance |
Physical Properties of 17-4PH Hot Rolled Round Bar
| Property | Value |
| Density | 7.75 g/cm³ |
| Melting Range | 1400 – 1440 °C |
| Modulus of Elasticity | 196 GPa |
| Thermal Conductivity | 18 W/m·K |
| Electrical Resistivity | 1.25 µΩ·m |
| Specific Heat | 460 J/kg·K |
| Coefficient of Thermal Expansion | 10.8 µm/m·°C (20–100°C) |
| Magnetic Behavior | Magnetic (Martensitic) |
Applications of 17-4PH Stainless Steel Bars
Based on our supply experience, 17-4PH Stainless Steel Round Bar Exporter in India markets use this alloy in:
- Aerospace components and landing gear parts
- Oil & gas valves, shafts, and pump components
- Marine hardware and propeller shafts
- Chemical processing equipment
- Power generation and turbine parts
- Medical instruments and tooling
- Heavy engineering and precision machined components
Its strength-to-weight ratio makes it ideal where weight reduction matters without compromising durability.
Packaging & Global Supply
As experienced 17-4PH SS Industrial Bars Distributors, we ensure:
- Secure packaging with wooden crates or bundles
- Proper labeling and traceability
- On-time domestic and international delivery
We regularly export Stainless Steel 17-4PH Cold Finish Round Bar and 17-4PH Hot Rolled Round Bar to Asia, Europe, the Middle East, and Africa.
Why Customers ASC LLP for your 17-4PH Bars needs?
Customers choose us because we combine real-world experience with technical expertise:
- In-house processing and sourcing
- Large ready stock of standard sizes
- Custom-cut and forged solutions
- Technical guidance from material specialists
- Competitive pricing and reliable lead times
Our focus is always on supplying the right grade, right condition, and right size for the application.
ASTM A564 UNS S17400 Rod Manufacturer in India
If you are looking for a reliable ASTM A564 UNS S17400 Rod Manufacturer in India or a trusted supplier of 17-4 PH Stainless Steel Round Bar, we offer complete solutions—from raw material selection to final delivery. With a wide range of round, flat, hex, square, forged, hollow, polished, and bright bars, we support industries that demand performance, reliability, and long service life.
For technical queries, bulk orders, or export requirements, our team is always ready to assist with expert guidance and dependable supply.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality 17-4PH Round Bar. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
