ASME SA240 S41500 Stainless Steel Plate | SA240 Type S41500
What is ASME SA240 S41500 Stainless Steel Plate?
As a professional stainless steel plate supplier and China Mill-Direct Supply / Mill Direct Exporter, SHH STEEL is pleased to present ASME SA240 S41500 Stainless Steel Plate, also known as SA240 Type S41500 or UNS S41500.
ASME SA240 Type S41500 is a low-carbon martensitic stainless steel alloyed with approximately 13% chromium, 4% nickel and 0.5–1.0% molybdenum. This composition provides a significant improvement in toughness, weldability and corrosion resistance compared with conventional 12% chromium martensitic grades such as Type 410. The grade can be quenched and tempered to achieve high strength levels while retaining good impact toughness, even at low temperatures.
Type S41500 is magnetic and is widely used in the oil & gas, petrochemical, power generation and general engineering industries for components requiring a combination of strength, toughness and moderate corrosion resistance. It is particularly valued for pressure-containing parts, valves, pump components, compressor parts and structural applications in mildly corrosive environments, including some sour service conditions when properly heat treated and qualified.
SHH STEEL supplies ASME SA240 S41500 as true Mill Direct Supply, sourcing directly from major Chinese stainless steel mills. This model delivers competitive mill pricing, consistent quality, full heat traceability and shorter lead times. Material is typically supplied in the annealed or quenched-and-tempered condition according to customer requirements.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | ASME SA240 / SA240M | Full compliance |
| Steel Grade | Type S41500 (UNS S41500) | Confirmed |
| Product Form | Plate, Sheet | Available |
| Delivery Condition | Annealed or Quenched & Tempered | Available |
| Thickness Range | 3 mm – 80 mm (thicker available on request) | Custom sizes supported |
| Width | Up to 2000–3000 mm | Available |
| Length | Up to 12000 mm or cut-to-length | Available |
| Surface Finish | No.1, 2B, and others on request | Available |
| Certification | EN 10204 3.1 / ASME Mill Test Certificate | Available |
Chemical Composition
Heat Analysis (Ladle Analysis) according to ASME SA240 Type S41500:
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.05 |
| Silicon (Si) | ≤ 0.60 |
| Manganese (Mn) | ≤ 0.50 – 1.00 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 11.50 – 14.00 |
| Nickel (Ni) | 3.50 – 5.50 |
| Molybdenum (Mo) | 0.50 – 1.00 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
Product Analysis (typical permissible variations):
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.05 |
| Silicon (Si) | ≤ 0.60 |
| Manganese (Mn) | 0.50 – 1.00 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 11.50 – 14.00 |
| Nickel (Ni) | 3.50 – 5.50 |
| Molybdenum (Mo) | 0.50 – 1.00 |
The low carbon content combined with nickel and molybdenum additions is the key feature of S41500. Nickel improves toughness and hardenability, while molybdenum enhances strength and moderate corrosion resistance, particularly in chloride and sulfide-containing environments.
Mechanical Properties
Typical Quenched and Tempered Condition
| Property | Value |
|---|---|
| Tensile Strength | 760 – 960 MPa (typical range) |
| Yield Strength (0.2%) | ≥ 550 MPa (80 ksi) |
| Elongation (in 50 mm) | ≥ 15% |
| Impact Toughness | Good (can meet low-temperature requirements with proper heat treatment) |
| Hardness | Typically 220 – 300 HB |
Exact mechanical properties depend on the specific heat-treatment cycle (austenitizing, quenching and tempering temperatures). SHH STEEL can supply material to agreed mechanical property ranges.
Physical Properties
- Density: approximately 7.75–7.80 g/cm³
- Magnetic: Magnetic in all conditions
- Melting Range: approximately 1450–1510°C
Material Comparison
| Grade | Structure | Key Alloying | Strength / Toughness | Typical Preference |
|---|---|---|---|---|
| SA240 Type 410 | Martensitic | 12% Cr | High strength, lower toughness | General martensitic use |
| SA240 Type 410S | Martensitic | 12% Cr, low C | Improved weldability | Welded martensitic applications |
| SA240 S41500 | Martensitic | 13% Cr + 4% Ni + Mo | High strength + good toughness | Oil & gas, pressure parts, valves |
| SA240 Type 420 | Martensitic | Higher C | Very high hardness | Cutlery, high-hardness applications |
| SA240 Type 304 | Austenitic | 18Cr-8Ni | Lower strength, excellent toughness | Superior corrosion resistance |
ASME SA240 S41500 is selected when higher toughness and better corrosion resistance than standard 410 are required, while still needing heat-treatable high strength. It is a common choice for oil & gas and petrochemical pressure-containing components. Related grades include astm a240 type 410 stainless steel sheet plate and astm a240 type 410s stainless steel sheet plate.
Corrosion Resistance
ASME SA240 Type S41500 offers moderate corrosion resistance — better than standard Type 410 due to the nickel and molybdenum additions. It performs well in atmospheric, fresh-water and many mild chemical environments, and can be suitable for certain sour service applications when properly heat treated and qualified to relevant standards (e.g., NACE).
It is not intended for severe chloride or highly oxidizing acid environments, where austenitic or duplex grades should be selected. Surface condition and heat treatment significantly influence corrosion performance.
Weldability
ASME SA240 Type S41500 has reasonably good weldability for a martensitic stainless steel, thanks to its low carbon content and nickel addition. Preheating and post-weld heat treatment (tempering) are generally recommended, especially for thicker sections, to avoid hydrogen-induced cracking and to restore toughness.
Matching or slightly higher-alloy filler metals (e.g., E410NiMo type) are commonly used. Procedure qualification is important for critical pressure or sour-service applications.
Heat Treatment
Heat treatment is essential to achieve the desired combination of strength and toughness in Type S41500.
Annealing
- Temperature: approximately 650 – 750°C (subcritical) or full anneal as required
- Cooling: Air cool or furnace cool
Quenching and Tempering (most common delivery condition)
- Austenitizing: typically 950 – 1050°C
- Quenching: Oil or polymer (depending on thickness)
- Tempering: 550 – 650°C (or as required to meet mechanical properties), followed by air cooling
Precise temperatures and holding times depend on section thickness and target mechanical properties. SHH STEEL can supply material in the quenched-and-tempered condition to agreed specifications.
Surface Finishes
| Finish | Description | Typical Use / Keywords |
|---|---|---|
| No.1 | Hot-rolled, annealed or Q&T, pickled | SA240 S41500 No.1 – most common for industrial and pressure vessel plate |
| 2B | Cold-rolled, annealed, pickled, skin-passed | SA240 S41500 2B – thinner plates |
| Special | Ground or custom finishes | SA240 S41500 Special – on request |
SHH STEEL regularly supplies ASME SA240 S41500 in No.1 finish, and can provide other finishes according to project requirements.
Tolerances
Dimensional tolerances for ASME SA240 S41500 Stainless Steel Plate conform to ASME SA240 and the general requirements of ASTM A480.
Typical available size range for SA240 S41500 plate:
- Thickness: 3 mm – 80 mm (thicker plates available on request)
- Width: up to 2000–3000 mm
- Length: up to 12000 mm or cut-to-length according to customer requirements
Thickness, width, length and flatness tolerances are controlled within standard limits. Tighter tolerances for SA240 S41500 plate can be arranged for specific project needs. SHH STEEL provides precise dimensional control for both standard and custom-size SA240 S41500 plates.
Equivalent Material Grades
| Grade / Designation | Standard | Notes |
|---|---|---|
| SA240 Type S41500 | ASME SA240 | — |
| A240 Type S41500 | ASTM A240 | Essentially identical |
| UNS S41500 | — | Unified Numbering System |
| F6NM / CA6NM related | ASTM A182 / A487 | Closest forged/cast equivalents |
| 1.4313 / X3CrNiMo13-4 | EN related | European equivalent |
| Related 13Cr-4Ni | GB / JIS | Approximate national equivalents |
Related grades frequently evaluated with ASME SA240 S41500 include astm a240 type 410 stainless steel sheet plate, astm a240 type 410s stainless steel sheet plate, and higher-alloy martensitic or duplex grades when more corrosion resistance is required.
Applications
ASME SA240 Type S41500 is widely used in applications requiring high strength, good toughness and moderate corrosion resistance. Typical applications of SA240 S41500 include:
| Industry / Sector | Typical Components / Equipment (with keywords) |
|---|---|
| Oil & Gas | SA240 S41500 wellhead components, valves, manifolds |
| Petrochemical | SA240 S41500 pressure vessels, separators, piping components |
| Power Generation | SA240 S41500 turbine and compressor parts |
| Pumps & Valves | SA240 S41500 pump casings, shafts, valve bodies |
| General Engineering | SA240 S41500 high-strength structural and mechanical parts |
| Offshore | SA240 S41500 components in moderately corrosive marine service |
Why Choose SHH STEEL
SHH STEEL is a China Mill-Direct Supply and Mill Direct Exporter of stainless steel plate. We maintain long-term strategic cooperation with major Chinese stainless steel mills and supply ASME SA240 Type S41500 with the following advantages:
- Competitive mill-direct pricing
- Consistent quality and complete heat traceability
- Full Mill Test Certificates (EN 10204 3.1 / ASME)
- Supply in annealed or quenched-and-tempered condition
- Flexible dimensions and surface finishes (including SA240 S41500 No.1)
- Technical support for heat treatment and material selection
- Reliable worldwide logistics and export documentation
FAQ
- What is the main advantage of SA240 S41500 over SA240 410?Type S41500 contains nickel and molybdenum additions and has much lower carbon, giving significantly better toughness, improved weldability and better corrosion resistance while still providing high strength after heat treatment. SHH STEEL recommends S41500 for more demanding strength-and-toughness applications.
- Is ASME SA240 S41500 magnetic?Yes, Type S41500 is magnetic in all conditions. SHH STEEL supplies material that meets this characteristic.
- Can SA240 S41500 be used in sour service?In many cases yes, when properly quenched and tempered and qualified to relevant standards such as NACE. SHH STEEL can supply material with appropriate heat treatment and documentation for customer qualification.
- What is the density of SA240 Type S41500?Approximately 7.75–7.80 g/cm³. SHH STEEL provides material certificates confirming physical and mechanical properties.
- Can SHH STEEL supply dual-certified ASME SA240 / ASTM A240 Type S41500?Yes, SHH STEEL commonly supplies dual-certified ASME SA240 / ASTM A240 Type S41500 material.
Conclusion
ASME SA240 S41500 Stainless Steel Plate (SA240 Type S41500) is a low-carbon nickel-molybdenum martensitic stainless steel that delivers an excellent combination of high strength, good toughness and moderate corrosion resistance. It is a preferred material for oil & gas, petrochemical, power and general engineering applications requiring heat-treatable performance beyond standard 410.
As a professional China Mill-Direct Supply and Mill Direct Exporter, SHH STEEL provides high-quality ASME SA240 Type S41500 plate with competitive pricing, full certification and complete technical support.
Contact SHH STEEL today for stock availability, heat-treatment options, surface finish details (including SA240 S41500 No.1), or a competitive quotation.
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