ASTM A204 Steel

Gnee®, over 15 years experience in supplying ASTM A204 Steel! Supply plates, profiles, bars, forgings and forgings billets; Strictly conforms to ASTM specifications for chemical composition, mechanical properties, heat treatment and testing; performs a range of tensile, hardness, impact, microscopic and ultrasonic tests on A204 steels; comes with an EN 10204 3.1 mill certificate; heat-numbered and stamped; own factory; free sample; large and diverse inventory; documentation, logistics, custom orders and after-sales service support.

ASTM A204 is an alloy steel specification covering high-temperature, pressure-vessel quality steel plates. It is commonly used for boiler parts, pressure vessels, flanges, fittings, and machine structural parts for high-temperature service. ASTM A204 steels have an optimised chemical composition for high-temperature strength and toughness. They also have good weldability.

Gnee has ASTM A204 steel in stock: 3 alloy steel grades – Grade A, Grade B and Grade C. 

ASTM A204 GR A has the lowest strength, with tensile strengths of 400-550 MPa and yield strengths of 205-345 MPa. It has the best weldability.

ASTM A204 GR B provides intermediate tensile strength levels between 550-725 MPa. Yield strength ranges from 345-485 MPa.

ASTM A204 GR C is the most widely used grade with a tensile strength of 415-550 MPa and a minimum yield strength of 240 MPa. Grade C has an optimised chemical composition with higher levels of manganese, chromium, molybdenum and vanadium. Grade C offers superior high temperature strength and creep resistance compared to grades A and B. Grade C also has more stringent requirements for the Charpy V-notch impact test to ensure good notch toughness. grade C offers the optimum combination of high temperature strength, weldability and cost-effectiveness required for pressure vessel applications.

Thickness: 5 MM – 200 MM

Width: 1220MM – 4200MM

Length: 5000-18000mm

Customize: Available

  • UT (Ultrasonic examination)
  • AR(As Hot Rolled only)
  • TMCP(Thermal Mechanical Control Processing)
  • N(Normalized)
  • Q+T(Quenched and Tempered)
  • Z Direction Test(Z15,Z25,Z35)
  • Charpy V-Notch Impact Test
  • HIC test
  • NDT
  • PWHT( Simulated Post Weld Heat Treatment)
  • NACE0175
  • The Third Party Test (Such as SGS Test)
  • Coated or Shot Blasting and Painting

Available, welcome to consult

A)Packaging Details: Standard export seaworthy packing or as required.
B)Delivery Time:30-50 days, 7 days for stock goods.
C)Loading Port:Shanghai ,Tianjin, Qingdao.
D)Offer Ability:5000MT/Per Month.
E)MOQ:1 Pcs.

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What shapes can it be welded into?

Parameters Of Hot Sale ASTM A204 Steel

GradeCMn≥SiPS
ASTM A204 Grade A0.180.90.13-0.450.0350.035
ASTM A204 Grade B0.20.90.13-0.450.0350.035
ASTM A204 Grade C0.230.90.13-0.450.0350.035
GradeTensile Strength(MPa)Yield Strength(MPa)% Elongation in 2 in.(50mm) minImpacting Test  Temperature(°C)
ASTM A204 Grade A45025523-20,40,-60
ASTM A204 Grade B48527521-20,40,-60
ASTM A204 Grade C51529520-20,40,-60

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