What is ASME SA387 Grade 22 Class 1?

What is ASME SA387 Grade 22 Class 1?

ASME SA387 Grade 22 Class 1  alloy steel plates are a high-chrome-moly grade in the ASME SA387 specification. While Class 2 is quenched and tempered for enhanced performance, Class 1 is normalized, providing tensile strength (415–585 MPa) and yield strength (minimum 205 MPa) with exceptional creep and oxidation resistance.

Gnee  supplies ASME SA387 Grade 22 Class 1 plates in a wide size range from 6mm to 100mm thickness, up to 4600mm width, and up to 12000mm length, meeting both ASME Section VIII pressure vessel code and customer-specific requirements.

ASME SA387 Grade 22 Class 1 Alloy Steel Plates are high-performance alloy steel plates designed for elevatedtemperature and pressure applications, These plates are part of the AS ME SA387/AST M A387 family of chromium-molybdenum alloy steels, which are widely used in industries such as petrochemical, oil and gas, and powergeneration.

Specification

ASME SA-387/SA-387M for chromium-molybdenum alloy steel plates in pressure vessels

Dimensions

6-100mm thick, 4600mm max wide, 12000mm max long

Hardness/Density

ASME SA387 Gr 22 Cl 1 Hardness 140-200 HB, Density 7.85 g/cm³

Equivalent Material

12CrMo5-10 (EN10028-2), STBA28 (JIS G4109), 12Cr2Mo1WVTiB (GB/T 713)

Properties of ASME SA387 Grade 22 Class 1Plates
1. High Tensile Strength: ASME SA387 Grade 22 Class 1 Plates possess high tensile strength, making themideal for applications that require durable and robust materials.
2. Thermal Stability: These plates maintain their mechanical properties even at elevated temperatures,ensuring
reliability in high-temperature environments.
3. Corrosion Resistance: The addition of Chromium and Molybdenum enhances the plates' resistance tocorrosion and oxidation, extending their service life.
4. Hardness and Toughness: The plates offer an excellent balance of hardness and toughness, providing
resistance to wear and impact.
5. Weldability: ASME SA387 Grade 22 Class 1 Plates can be welded using standard welding techniques,
facilitating ease of fabrication.

Advantages of ASME SA387 Grade 22 Class 1Plates:
1. Extended Service Life: The superior properties of these plates ensure a longer service life, reducing the needfor frequent replacements and maintenance.
2. Versatility: These plates are suitable for a wide range of applications,from pressure vessels to heat exchangers,
offering flexibility in design and usage.
3. Cost-Effective: The durability and long-term performance of ASME SA387 Gr22 Class 1 Plates provide costsavings over time, making them a cost-effective choice for industrial applications.4. High Performance: The plates' ability to withstand extreme conditions ensures high performance andreliability in critical applications.
5. Compliance with Standards: ASME SA387 Gr22 Class 1 Plates comply with stringent international standards,
ensuring quality and consistency.

Equivalents for ASME SA387 Grade 22 Alloy Steel Plates

Specifications for ASME SA387 Grade 22 Alloy Steel Plates

Chromium & Molybdenum content (according to the ASME specification)

Tensile Requirements for ASME SA387 Grade 22 Alloy Steel Plates Class 1 Plates

ASME SA-387 Grade 22 Class 1 ASME SA-387/SA-387M Chemical Element

1. What are ASME sa387 grade 22 Class 1 plates?
The properties of ASME SA387 Grade22 Class1 Plates make them suitable for demandingapplications in the petrochemical, oil and gas, and power generation industries. Here are the keyproperties of these plates:

2What is ASME sa387 grade 22 Class 1 equivalent to?

ASME SA387 Grade 22 Class 1 is equivalent to ASTM A387 Grade 22 Class 1, with common international equivalents including EN 10CrMo9-10 (European/German) and BS 622-515B (British), all referring to a Cr-Mo alloy steel plate used in high-temperature pressure vessel applications, featuring about 2.25% Chromium and 1.00% Molybdenum.

3What is the hardness of ASME sa387 grade 22 Class 1?

ASME SA387 Grade 22 Class 1 doesn't have a single specified hardness value in the standard; instead, its hardness is controlled indirectly by its minimum yield strength (around 205 MPa or 30 ksi) and tensile strength (415-585 MPa or 60-85 ksi), requiring specific tempering temperatures (like 1250°F / 675°C) and generally meeting requirements of NACE MR0175 for sour service, but a specific hardness (like Brinell or Rockwell) depends on the mill's processing and final application, often around 131-160 HBW for normalized/tempered material.

4What temperature is ASME sa387 grade 22 Class 1?

ASME SA387 Grade 22 Class 1 is a chromium-molybdenum alloy steel designed for elevated temperatures, often used in boilers and pressure vessels, offering good high-temperature strength, oxidation, and corrosion resistance, with applications extending to around 600°C (1100°F) and beyond, though its tempering is usually done at a minimum of 1250°F (675°C).

5What are the typical application fields of ASME sa387 grade 22 Class 1?

ASME SA387 Grade 22 Class 1 is primarily used for high-temperature, high-pressure equipment in the oil, gas, and petrochemical industries, including pressure vessels, heat exchangers, boilers, piping, and reactors, due to its excellent creep, corrosion, and oxidation resistance at elevated temperatures, also finding use in power generation.

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