630 Stainless Steel Plate: High-Strength, Corrosion-Resistant Solution for Critical Applications
Meta Description: Discover 630 stainless steel plate with superior strength, corrosion resistance, and high-fatigue resistance. Ideal for aerospace, oil & gas, and medical applications.
Introduction
630 Stainless Steel Plate is a precipitation-hardening alloy that delivers an exceptional balance of high strength (up to 1300 MPa) and corrosion resistance, making it the ideal material for demanding applications in industries such as aerospace, oil & gas, and medical devices. Known for its martensitic structure, 630 stainless steel provides excellent fatigue resistance and can achieve hardness levels up to 44 HRC in its hardened condition.
What sets 630 stainless steel plate apart is its unique ability to undergo precipitation hardening — a heat treatment process that enhances its mechanical properties without compromising its corrosion resistance. This feature makes it highly suitable for high-pressure applications, structural components, and fasteners that require a combination of strength, resistance to wear, and durability.
Compared to other commonly used grades like 304 and 316 stainless steel, 630 provides superior strength-to-weight ratios and is far more effective in high-stress environments. Whether you need plates for turbine components, high-pressure pumps, or downhole tools, 630 stainless steel plate offers the performance and durability required by the most demanding industries.
At [Your Company Name], we are the global No.1 630 stainless steel plate supplier, offering high-quality plates with rapid delivery and competitive prices.
Product Overview & Superior Advantages
- High Strength (Up to 1300 MPa): The 630 stainless steel plate offers exceptional strength for high-pressure and high-stress applications.
- Corrosion Resistance: Compared to grades like 17-4PH, 630 stainless steel offers superior resistance to corrosion, particularly in chloride and sour service environments.
- Fatigue Resistance: Its high fatigue resistance makes it ideal for dynamic applications such as turbine casings, high-pressure pumps, and hydraulic systems.
- Machinability: In its annealed condition, 630 stainless steel plate offers excellent machinability, allowing for custom cutting and fast turnaround times.
- Versatile Applications: Available in various thicknesses and finishes, it is suitable for a wide range of applications, from aerospace structural components to oil & gas equipment.
Detailed Advantages:
- Strength-to-Weight Ratio: 630 stainless steel plate offers an outstanding strength-to-weight ratio, making it highly effective in applications requiring a combination of strength and lightweight materials.
- Weldability and Formability: In its annealed condition, 630 stainless steel plate is highly weldable and can be formed into custom shapes, allowing for a wide variety of applications.
- Toughness and Durability: Even in extreme environments, 630 stainless steel plate maintains excellent toughness, ensuring long-lasting performance in industries like oil & gas and nuclear power.
- Global Certifications: All our plates come with full certifications, including EN 10204 3.1/3.2, PED, and NACE MR0175, ensuring compliance with global standards for quality and performance.
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 15–17.5 |
| Nickel (Ni) | 3–5 |
| Copper (Cu) | 3–5 |
| Niobium + Tantalum (Nb + Ta) | 0.15–0.45 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
630 stainless steel plate (UNS S17400) consists primarily of chromium, nickel, and copper, with niobium and tantalum added to enhance precipitation hardening. This composition gives 630 stainless steel its impressive corrosion resistance, high strength, and durability, making it perfect for high-performance applications.
Mechanical Properties
| Condition | Yield Strength (MPa) | Ultimate Tensile Strength (MPa) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|---|
| Solution Annealed | 850 | 1050 | 25 | 30–35 |
| H900 | 900 | 1150 | 20 | 35–40 |
| H925 | 925 | 1200 | 15 | 38–42 |
| H1025 | 1025 | 1250 | 12 | 40–44 |
| H1150 | 1150 | 1300 | 8 | 42–46 |
The 630 stainless steel plate exhibits impressive mechanical properties, including yield strengths up to 1300 MPa in its hardened state. This makes it ideal for demanding applications where strength and toughness are essential.
Physical Properties
| Property | Value |
|---|---|
| Density (g/cm³) | 7.75 |
| Thermal Conductivity (W/m·K) | 16.3 |
| Magnetic (after hardening) | Yes |
With a density of 7.75 g/cm³, 630 stainless steel plate has a thermal conductivity of 16.3 W/m·K, suitable for applications that require thermal management. Additionally, it remains magnetic after hardening, making it suitable for specific magnetic applications.
630 vs 17-4PH vs 304 vs 316 vs 410 Plate Comparison
| Property | 630 Stainless Steel Plate | 17-4PH Stainless Steel Plate | 304 Stainless Steel Plate | 316 Stainless Steel Plate | 410 Stainless Steel Plate |
|---|---|---|---|---|---|
| Yield Strength (MPa) | 1300 | 1300 | 250 | 290 | 550 |
| Corrosion Resistance | Excellent | Excellent | Good | Excellent | Moderate |
| Hardness (HRC) | 28–44 | 38–44 | 20–30 | 25–35 | 30–40 |
| Heat Treatment | H900, H925, H1025, H1150 | H900, H925 | Annealed | Annealed | Annealed |
| Cost | Moderate | Moderate | Low | High | Low |
630 stainless steel plate outperforms 304 and 316 in terms of strength and corrosion resistance while offering comparable performance to 17-4PH but at a more competitive price point.
Available Specifications
| Thickness (mm) | Width (mm) | Length (mm) | Finish |
|---|---|---|---|
| 3–100 | 1000–3000 | Up to 12000 | No.1 Hot-Rolled, Pickled, 2B, Polished, Brushed |
630 stainless steel plate is available in a wide range of thicknesses and finishes to suit various industrial applications, including hot-rolled, pickled, polished, and brushed finishes.
Heat Treatment & Precipitation Hardening Guide
The precipitation hardening process for 630 stainless steel plate involves solution annealing at 1038°C, followed by aging at H900, H925, H1025, and H1150, achieving hardness levels ranging from 28–44 HRC.
Major Applications
- Oil & Gas: Wellhead plates, downhole tool plates, pump & valve bodies
- Aerospace: Structural plates, aircraft components
- Medical: Surgical tools, medical instrument components
- High-Pressure Systems: Pressure vessel shells, hydraulic fittings
- Nuclear: Reactor components, turbine casings
Exactly THREE Image Placeholders with Strong SEO Alt Text
- Image 1: Polished 630 stainless steel plate in H900 condition stacked in warehouse
- Image 2: Professional infographic 630 stainless steel plate data sheet + strength vs aging temperature curve
- Image 3: Real-installation collage – 630 plates used in oil & gas Christmas trees, pump shafts, aerospace brackets, and high-pressure valve bodies
Why We Are the Best 630 Stainless Steel Plate Distributor
- Largest Stock: We carry the largest inventory of 630 stainless steel plates in
all conditions and sizes.
* **Direct Mill Relationships**: Benefit from our **direct relationships** with **top manufacturers**, ensuring **quick delivery** and **competitive pricing**.
* **Custom Solutions**: **Precision cutting**, **beveling**, and **custom machining** available.
* **Quality Assurance**: 100% **PMI**, **ultrasonic**, and **hardness testing** for all plates.
## Packaging & Quality Standards
All **630 stainless steel plates** are securely packaged in **export-grade wooden crates**, with **plastic wrapping** to protect the surface. Each order comes with a **full certification package**.
## FAQ Section
1. **What is the maximum hardness of 630 stainless steel plate?**
2. **Is 630 stainless steel plate magnetic after hardening?**
3. **630 vs 17-4PH differences (they are the same grade)**
4. **Can 630 plate be welded and what filler?**
5. **Recommended condition for maximum strength (H900)**
6. **Corrosion resistance in chloride or sour service environments**
7. **NACE MR0175 / ISO 15156 compliance**
8. **Minimum order quantity**
9. **Lead time for H900 condition 630 plate**
10. **Can 630 plate be polished to mirror finish?**
11. **Is 630 plate suitable for cryogenic applications?**
12. **Typical applications in oil & gas**
## Conclusion + Urgent Call-to-Action
For premium **630 stainless steel plates** with **superior performance** and **unmatched quality**, contact us now. Get an **instant quote** within **1 hour**. **24/7 customer support** via **WhatsApp**, **WeChat**, **email**, **phone**, or **live chat**.
**Request your quote today** and experience the **best in stainless steel plate solutions**.