ASTM A813&A813M
Characteristics
Material Composition: The standard specifies the use of austenitic stainless steel materials, typically grades such as 304, 304L, 316, or 316L, known for their corrosion resistance and mechanical properties.
Welding Method: It defines requirements for single- or double-welded pipes, indicating the welding methods used in their fabrication, ensuring the integrity of the welds.
Surface Finish: The standard may specify surface finish requirements for the pipes, such as pickling, passivation, or other treatments, to meet specific industrial or aesthetic standards.
ASTM A813&A813M Data Sheet
Dimensions and Tolerances
Equivalent Grades
Chemical Composition
Mechanical Properties
Fabrication and Welding
Dimensions and Tolerances
Thickness: 0.188 in. (4.76 mm) to 0.375 in. (9.52 mm), tolerance ± 0.005 in. (0.13 mm)
Length: Random lengths or cut lengths, tolerance +3 in. (76.2 mm), -0 in. (0 mm)
Tolerance: Outside diameter and wall thickness variations as specified in the standard
Equivalent Grades
China: GB/T 9711.1 L485
Japan: JIS G3466 STK 490
Germany: DIN 17172 StE 485.7 TM
UK: BS 3601 L485
Chemical Composition
Carbon (C): 0.23 max
Manganese (Mn): 1.25 max
Phosphorus (P): 0.030 max
Sulfur (S): 0.030 max
Silicon (Si): 0.10 max
Mechanical Properties
Tensile Strength
Maximum stress a material can withstand before failure.
Testing Method: ASTM E8/E8M
Value Range: 515 – 690 MPa (75 – 100 ksi)
Yield Strength
Stress at which the material begins to deform plastically.
Testing Method: ASTM E8/E8M
Value Range: ≥ 205 MPa (≥ 30 ksi)
Elongation
Percentage increase in length before fracture.
Testing Method: ASTM E8/E8M
Value Range: ≥ 35% (longitudinal)
Hardness
Resistance to deformation or indentation.
Testing Method: ASTM A370 or equivalent
Value Range: ≤ 217 Brinell (HBW)
Impact Toughness
Energy absorbed before fracture under impact.
Testing Method: ASTM E23
Value Range: Variable
Modulus of Elasticity
Measure of stiffness under load.
Testing Method: ASTM E111 or equivalent
Value Range: Variable
Shear Strength
Maximum shear stress before failure.
Testing Method: ASTM A370 or equivalent
Value Range: Variable
Fatigue Strength
Maximum stress endured for specified cycles.
Testing Method: ASTM E466 or equivalent
Value Range: Variable
Creep Resistance
Resistance to deformation under long-term stress.
Testing Method: ASTM E139 or equivalent
Value Range: Variable
Corrosion Resistance
Resistance to chemical degradation.
Testing Method: ASTM A262, ASTM G28, or equivalent
Value Range: Excellent
Fabrication and Welding
Fabrication Methods
Detail the recommended fabrication methods such as hot forming, cold forming, machining, etc., as specified in the standard.
Welding Processes
List the approved welding processes permitted by ASTM A813/A813M, such as SMAW, GTAW, GMAW, etc.
Welding Parameters
Provide guidance on welding parameters including preheat temperature, interpass temperature, heat input, welding consumables, etc.
Welding Procedure Qualification
Describe the requirements for qualifying welding procedures, including testing methods, acceptance criteria, and documentation.
Welder Qualification
Specify the qualifications necessary for welders, including experience, training, certifications, and testing requirements.
Inspection and Testing
Outline the inspection and testing procedures required for fabricated and welded components, including visual inspection, non-destructive testing, dimensional checks, etc.
Acceptance Criteria
Define the criteria for accepting or rejecting fabricated and welded components based on ASTM A813/A813M.
Properties Assurance
When it comes to selecting materials for engineering applications, understanding their properties is paramount. ASTM A813/A813M provides comprehensive specifications for materials used in various industries, ensuring they meet stringent quality and performance standards. One of the most appealing aspects to customers is the assurance of reliable material properties outlined in this standard.
From mechanical properties like strength and toughness to chemical composition and corrosion resistance, ASTM A813/A813M materials undergo rigorous testing to ensure consistency and reliability. This not only instills confidence in the durability and longevity of the components but also contributes to overall safety and performance.
