ASME SA 517 Grade Q(SA517GRQ)Pressure Vessel Steel Plate

ASME SA 517 Grade Q Pressure Vessel Steel Plate supplier

In the realm of high-performance materials for critical industrial applications, ASME SA 517 Grade Q pressure vessel steel plate stands out as a premium choice for constructing robust boilers and pressure vessels.

As a leading producer and exporter at Gangsteel, we specialize in manufacturing and supplying high-quality ASME SA 517 Grade Q plates, engineered to meet the stringent demands of industries such as oil and gas, petrochemical processing, and power generation. This quenched and tempered alloy steel offers exceptional strength and toughness, making it ideal for high-pressure and high-temperature environments where safety and durability are paramount.

In this comprehensive guide, we’ll explore the properties, applications, pricing, and equivalents of ASME SA 517 Grade Q, addressing common user queries with detailed insights. For related options, consider our ASME SA537/SA537M lineup or other grades like ASME SA 537 Class 1 for normalized alternatives.

What is ASME SA 517 Grade Q Pressure Vessel Steel Plate?

ASME SA 517 Grade Q is a high-strength, quenched and tempered alloy steel plate specified under the ASME SA517/SA517M standard, designed for welded boilers and pressure vessels requiring superior mechanical properties. The “Grade Q” designation indicates a specific alloy composition with a focus on high yield and tensile strength, achieved through quenching (rapid cooling in water or oil after heating to about 900-950°C) and tempering (reheating to 600-700°C to reduce brittleness). This heat treatment results in a refined microstructure that enhances toughness and resistance to fatigue, making it suitable for extreme conditions, including low-temperature services down to -50°C and high-pressure applications up to 1000 bar.

At Gangsteel, we produce SA 517 Grade Q plates with precision, adhering to ASME and ASTM A517 equivalents (Grade Q is identical to ASTM A517 Grade Q). The material is widely used in critical components like reactor vessels, heat exchangers, and storage tanks in petrochemical plants, where it withstands aggressive media such as hydrogen sulfide in sour gas environments. Its high strength-to-weight ratio allows for thinner walls—often 20-30% thinner than standard carbon steels like SA 516 Gr 70—reducing material costs and improving design efficiency. Compared to ASME SA 537 Class 2, SA 517 Grade Q offers higher tensile strength, making it suitable for more demanding pressure vessels.

The development of SA 517 Grade Q traces back to the need for steels that could handle the increasing pressures and temperatures in modern industrial processes, particularly in the 1960s and 1970s with advancements in oil refining and nuclear power. Certified to standards like NACE MR0175 for sour service, it’s a go-to material for applications requiring resistance to hydrogen-induced cracking (HIC). Gangsteel ensures compliance through rigorous testing, including ultrasonic inspection, Charpy V-notch impact tests, and HIC testing when specified.

Chemical Composition of ASME SA 517 Grade Q

The chemical composition of ASME SA 517 Grade Q is tailored for high strength and corrosion resistance, incorporating alloying elements like chromium, molybdenum, and nickel to enhance performance under stress.

This composition, with higher alloy content than asme sa537 class 1 boiler steel chemical composition details, ensures exceptional hardness and toughness. Chromium and molybdenum improve creep resistance, while nickel enhances low-temperature performance.

Mechanical Properties of ASME SA 517 Grade Q

SA 517 Grade Q’s mechanical properties are optimized for high-pressure applications, with superior yield and tensile strengths compared to sa 537 cl.1 mechanical properties and density guide.

These properties, achieved through quenching and tempering, make SA 517 Grade Q ideal for heavy-duty vessels, surpassing the strength of ASME SA537 Cl.1.

Density and Delivery Condition

The density is 7.85 g/cm³ (7850 kg/m³), typical for alloy steels. Plates are delivered quenched and tempered, with options for stress relieving or simulated PWHT to meet fabrication needs. Gangsteel provides certifications like EN 10204 3.1 or 3.2.

Available Specifications and Models

Gangsteel offers SA 517 Grade Q in:

• Thickness: 6mm to 100mm (thicker on request)
• Width: 1500mm to 4000mm
• Length: 3000mm to 18000mm
• Specifications: ASME SA517 Grade Q, ASTM A517 Grade Q; custom cuts and testing available.

These dimensions cater to large-scale vessels, with flexibility for bespoke projects.

Pricing Insights for ASME SA 517 Grade Q

The price of ASME SA 517 Grade Q pressure vessel steel plate in 2025 ranges from $1,200 to $4,500 per metric ton, higher than current pricing for asme sa537 class 1 pressure vessel plates ($600-3,200/ton) due to its alloy content and complex processing. Standard plates (e.g., 20-50mm) typically cost $1,500-2,500/ton, while thicker or HIC-tested plates may reach $3,500-4,500/ton. Global factors like nickel and molybdenum prices, energy costs, and demand for high-strength steels drive fluctuations. In India, prices align at $1,800-4,000/ton, reflecting import tariffs. Gangsteel offers competitive rates, with bulk discounts and tailored quotes—contact us for precise pricing.

Equivalent Materials for ASME SA 517 Grade Q

Equivalents include ASTM A517 Grade Q, EN 10028-6 P690Q, and JIS G3115 SPV490 (though with slight composition differences).

Verification with ASME or EN codes is advised.

Applications and Advantages in Pressure Vessel Systems

SA 517 Grade Q is used in high-pressure reactors, LNG storage, and nuclear vessels, offering up to 30% weight savings over SA 516 grades. Its high strength reduces material usage, and nickel content ensures low-temperature toughness, ideal for cryogenic applications.

Frequently Asked Questions (FAQs) About ASME SA 517 Grade Q

What is ASME SA 517 Grade Q material?

A high-strength, quenched and tempered alloy steel for pressure vessels, with yield 690 MPa.

How does SA 517 Grade Q compare to SA 537 Class 2?

SA 517 Grade Q has higher tensile strength (795-930 MPa vs. 550-690 MPa) and more alloying for extreme conditions, unlike sa 537 cl.2 mechanical properties and density guide.

What are the applications of SA 517 Grade Q?

High-pressure vessels in oil refineries, chemical plants, and power generation.

What is the price of SA 517 Grade Q?

$1,200-4,500/ton, varying by specs and region.

Does SA 517 Grade Q require impact testing?

Yes, Charpy tests ensure toughness at low temperatures.

Is SA 517 Grade Q suitable for sour service?

Yes, with HIC testing per NACE MR0175.

In summary, ASME SA 517 Grade Q from Gangsteel offers unmatched strength for critical applications. Contact us for quotes and technical support.

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