A537 Cl1 Carbon Steel Plate for Pressure Vessel

A537 Cl1 Carbon Steel Plate for Pressure Vessel - Image 3

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ASTM A537 Class 1 is a heat-treated carbon-manganese-silicon steel plate designed for fusion welded pressure vessels. It features excellent low-temperature toughness and is delivered in normalized condition for enhanced mechanical properties. This grade is widely used in petrochemical reactors, storage tanks, and cryogenic equipment requiring guaranteed impact properties at sub-zero temperatures.

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PRODUCT DETAILS

A537 Cl1 is a heat-treated carbon-manganese silicon steel plate specifically designed for pressure vessel applications, conforming to ASTM A537/ASME SA537 standards . This normalized steel grade offers excellent strength and toughness, with yield strength ≥345 MPa and tensile strength ranging from 485-620 MPa, making it ideal for low-temperature service environments .

Chemical Composition

Element	Class 1	Class 2	Class 3
Carbon (C)	≤ 0.24	≤ 0.24	≤ 0.24
Manganese (Mn)	0.70 – 1.60	0.70 – 1.60	0.70 – 1.60
Phosphorus (P)	≤ 0.035	≤ 0.035	≤ 0.035
Sulfur (S)	≤ 0.035	≤ 0.035	≤ 0.035
Silicon (Si)	0.15 – 0.50	0.15 – 0.50	0.15 – 0.50
Nickel (Ni)	≤ 0.25	≤ 0.25	≤ 0.25
Chromium (Cr)	≤ 0.25	≤ 0.25	≤ 0.25
Molybdenum (Mo)	≤ 0.08	≤ 0.08	≤ 0.08

Mechanical Properties

Property	Class 1 (Normalized)	Class 2 (Q&T)	Class 3 (Q&T)
Yield Strength (min)
≤ 65mm	≥ 345 MPa	≥ 415 MPa	≥ 380 MPa
65 – 100mm	≥ 310 MPa	≥ 380 MPa	≥ 345 MPa
100 – 150mm	N/A	≥ 315 MPa	≥ 275 MPa
Tensile Strength
≤ 65mm	485 – 620 MPa	550 – 690 MPa	550 – 690 MPa
65 – 100mm	450 – 585 MPa	515 – 655 MPa	515 – 655 MPa
100 – 150mm	N/A	485 – 620 MPa	485 – 620 MPa
Elongation (min)	≥ 22%	≥ 22%	≥ 22%

Scope of Application

A537 Cl1 pressure vessel steel plates are widely used in the fabrication of critical equipment for:

– **Petrochemical Industry**: Reactors, separators, heat exchangers, spherical tanks, and oil/gas storage vessels
– **Power Generation**: Boiler drums, pressure vessels for thermal and nuclear power plants (including nuclear reactor pressure shells)
– **Energy Sector**: Liquefied petroleum gas (LPG) tanks, LNG storage facilities, and cryogenic equipment
– **Industrial Manufacturing**: Chemical processing equipment, high-pressure pipelines, and water turbine casings for hydroelectric stations

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FAQ

1. How to get samples to check the quality? How long can I get the samples?
Answer:After confirming the price, we are happy to provide samples for your evaluation. After confirming the sample details, the samples will be ready for delivery within 3-7 days, and sent to you by courier, and arrive within 3-5 days.
2.Do you provide samples ? is it free or extra ?
Answer:We provide samples free of charge, but the customer is responsible for the courier freight.
3. Do you accept the third party inspection?
Answer: Yes absolutely we accept.
4.Can you accept customization?
Answer:Yes. If you have special requirements on products or packages, we can do customization for you.
5.How do you control the quality?
Answer:We have professional inspectors to analyze chemical composition of raw materials and test the finished products strictly according to standard stipulated in the contract. In this process, Internal and external surfaces, two ends appearance, bending degree, fixed length, outer diameter and wall thickness dimension etc will be checked one by one. You can be assured that all the products you get from us are reliable.