1. What is ASTM A519 1017 Steel Pipe?
A: ASTM A519 is the American standard for seamless carbon and alloy steel mechanical tubing. 1017 is a carbon steel grade (similar in composition to 17Mn or 15CrMo in China). It is a medium-carbon steel with a carbon content of approximately 0.15%-0.20%, offering good machinability and medium strength.
2. What are the main chemical compositions of 1017 steel pipe?
A: Typical composition (by weight):
Carbon (C): 0.15%-0.20%
Manganese (Mn): 0.30%-0.60%
Phosphorus (P), Sulfur (S): ≤0.040% (each)
Silicon (Si): 0.15%-0.35%
(Note: Specific limits are subject to the latest version of the standard.)
3. What are the mechanical property requirements for 1017 steel pipe? A: The minimum properties specified by ASTM A519 are:
Tensile strength: ≥485 MPa
Yield strength: ≥315 MPa
Elongation: ≥10% (50mm gauge length)
Hardness: Typically HB 137-179.
4. What are its main applications?
A: Suitable for mechanical structural parts, such as:
Hydraulic cylinders, drive shafts
Automotive parts (non-critical load-bearing components)
General engineering pipes, requiring subsequent heat treatment or cold working.
5. What is the difference between A519 and ASTM A106 or A53 steel pipe?
A:
A106: Designed for high-temperature service (such as boiler tubes) and has a higher carbon content;
A53: Covers both welded and seamless pipes, primarily used for low-pressure fluid transportation;
A519: Focuses on mechanical properties and is suitable for precision mechanical components.
