1.What is ASTM C913?
ASTM C913 is a standard specification for precast concrete pipe for jacking in tunnel construction. It specifies requirements for reinforced concrete pipes designed to be installed by jacking methods, ensuring they can withstand external loads and pressures encountered during tunneling operations.
2.What material is 10CrMo9 10?
10CrMo9 10 is a chromium-molybdenum alloy steel per the EN (European Norm) standard. It is used for high-temperature applications (e.g., boilers, pressure vessels). Its composition includes approximately 2.25% Cr, 1% Mo, and controlled carbon content (~0.10-0.15%), offering good creep resistance and weldability.
3.What is C1010 material?
C1010 is a low-carbon steel per the AISI/SAE classification. It contains approximately 0.10% carbon, with good ductility, formability, and weldability. It is commonly used for cold-headed fasteners, shafts, and general-purpose components requiring mild strength.
4.What material is S30300?
S30300 (UNS designation) is a free-machining austenitic stainless steel, commonly known as Type 303. It contains sulfur (~0.15-0.35%) for improved machinability, with ~17-19% Cr, 8-10% Ni, and ≤0.15% C. It is used for parts requiring extensive machining but has reduced corrosion resistance compared to Type 304.
5.What is A217 C12A made of?
A217 C12A (ASTM A217 Grade C12A) is a chromium-molybdenum alloy steel casting for high-temperature service. Its composition includes ~1% Cr, 0.5% Mo, and 0.15-0.20% C, with additions of manganese, silicon, and trace elements. It is used for valves, fittings, and pressure-containing parts in power plants and refineries.
