SA387 GR.21 CL1 Pressure vessel steel plate
Classification :
PRODUCT DETAILS
SA387 GR.21 CL1 Pressure vessel steel plate Descriptions:
ASTM A387 Gr 21 CL 1 is a chromium molybdenum alloy steel plate intended primarily for welded boiler and pressure vessels designed of elevated temperature service. The Cr content 3.00 % and the Mo content 1.00 %. Each grade except grade 21L, Grade 22L, Grade 91 and Grade 911 is available in two classes of tensile strength levels.ASTM A387 GRADE 5 Class 1 - Alloy steelASTM A387 GRADE 5 Class 1 A high quality ASTM A387 GRADE 5 Class 1 or chrome molybdenum alloy steel plate intended specifically for use in weldable carbon steel pressure vessels at elevated temperatures. Added molybdenum gives the material greater temperature tensile strength and the chromium provides improved corrosion resistance.ASTM A387 Grade 11 Class 1 steel plates for pressure somalia a387 grade 5 class1ASTM A387 Grade 11 Class 1 is in the standard ASTMA-387 SA-387M .A387 Grade 11Class 1 is a kind of Cr-Mo-alloy steel plates material used to fabric high temperature pressure vessels.A387 have ten grades or levels. They are grade 2 , grade 12 , grade 11 , grade 22 , grade 22L , grade 21 , grade 21L , grade 5 , grade 9 , grade 91.
Chemical Composition and Mechanical Properties:
| SA387 Gr.21L CL.1 Chemical Composition | |||||||
| Grade | The Element Max (%) | ||||||
| C | Si | Mn | P | S | Cr | Mo | |
| SA387 Gr.21L Cl.1 | 0.12 | 0.50 | 0.25-0.66 | 0.035 | 0.035 | 2.63-3.37 | 0.85-1.15 |
| Grade | SA387 Gr.21L CL.1 Mechanical Property | |||
| Thickness | Yield | Tensile | Elongation | |
| SA387 Gr.21L Cl.1 | mm | Min Mpa | Mpa | Min % |
| t≦50 | 205 | 415-585 | 18 | |
| 50<t≦200 | - | - | - | |
Refered Standards for ASME SA387 Alloy Steel Plate
ASME
- SA20/A20M: General requirements for pressure vessel plates.
- SA370: Test specification for mechanical properties of steel
- SA435/A435M: For straight-beam ultrasonic examination of steel plates
- SA577/A577M: For ultrasonic angle beam examination of steel plates
- SA578/A578M: For straight beam UT examination of rolled steel plates in special applications
- SA1017/A1017M: Specification for pressure vessle plates of alloy steel, chromium-molybdenum-tungsten
AWS Specification
- A5.5/A5.5M: Low alloy steel electrodes for shield metal arc welding.
- A5.23/A5.23M: Low alloy steel electrodes for fulxes for submerged arc welding.
- A5.28/A5.28M: For gas shielded arc welding
- A5.29/A5.29M: For flux cored arc welding.
Heat Treatment for SA387 Chrom Moly Alloy Steel Plate
Chrome moly alloy steel plate under ASME SA387 shall be killed steel, with thermally treated either by annealing, normarlizing and tempering. Or in case agreed by buyer, accelerated cooling from the austenitizing temperature by air blasting or liquid quenching, followed by tempering, minimum tempering temperatures shall be as below table:
| Grade | Temperature, °F [°C] |
| 2, 12 and 11 | 1150 [620] |
| 22, 22L, 21, 21L and 9 | 1250 [675] |
| 5 | 1300 [705] |
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The company mainly engaged in steel production, sales and other businesses. The main products include all kinds of steel plate, steel pipe, bar, profile and other materials and section steel. At the same time is a number of domestic large steel mill level agents, with a certain price advantage.

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For many years, the company has been established, adhering to the purpose of "respecting contract, keeping faith, customer first, reputation first, quality first", adhering to the customer demand as the center, to "achieve what customers think, think what customers think" business philosophy, to "one sale, small profit, real price, timely delivery" business principle, we manage all kinds of specifications and materials of steel pipe and profile for customers.

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The main supply fields are: aerospace, national defense equipment, military weapons, chemical industry, shipbuilding, nuclear energy, trains, containers, environmental protection, precision machining, auto parts, machinery, electronic products, molds, medical treatment Equipment, construction, decoration, etc.

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Over the years since its establishment, the company has been adhering to the purpose of "honoring contract, keeping faith, customer first, reputation first, quality first", adhering to the customer demand as the center, to "reach customer think, think customer think" business philosophy.

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The company guarantees the quality of its products with its strong financial strength, advanced management experience and strict quality control system for incoming goods. Excellent products and good reputation are well-known all over the country, and have won the trust and support of major steel mills and customers. Welcome to inquire, negotiate or visit our company in person. Welcome to inquire, negotiate or visit our company in person.
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FAQ
Q1:Will you offer samples?
A:Yes. We will provide samples according to your needs and send them out within three days after receiving payment.
Q2 : What product information do I need to provide?
A : Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3 : It's my first time to import steel products, can you help me with it?
A : Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:Do you have the products in stock?
A:We have the products in stock. Also, we can produce for your order.
Q5:Do you offer after-sales services?
A : Of course. We have a perfect after-sales service system, if you have any questions, please feel free to contact us. We will do it to your satisfaction.
Q6:What kind of work does your company do?
A:Our company is a professional manufacturer. We mainly produce stainless steel plate/coil/round rod, carbon steel plate/coil,galvanized plate/coil, PPGI coil, roofing sheet and so on.
Q7:What are the advantages of your company?
A : We have international advanced production equipment, large factory buildings, strong company strength, perfect products and reliable quality.
Q8 : Are you a factory or trading company?
A : We are a professional steel factory with many years of experience, perfect manufacturing process, quality assurance!
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