ASTM A312/A312M S34565 Introduce

The ASTM A312/A312M standard is typically used for constructing austenitic stainless steel pipes used in a variety of applications. These include pressurized water systems, such as those in cooling systems, pump and valve systems, and storage tank systems. It is also used in process piping, such as in chemical plants, oil refineries, and petrochemical plants; and in pressure vessels and boilers. In addition, the standard is used in food and beverage processing equipment, as well as in automotive and aerospace applications.

Smelting temperature:1481°C - 1764°C

Application:Seamless and welded austenitic stainless steel tube

ASTM A312/A312M S34565 Material Chemical Composition

The chemical composition of the ASTM A312/A312M S34565 steel are as follows:

ElementMinMax
Silicon (Si)-1.0000
Sulfur (S)-0.0100
PhOsphorus (P)-0.0300
Nickel (Ni)16.000018.0000
Niobium (Nb)-0.1000
Nitrogen (N)0.40000.6000
Molybdenum (Mo)4.00005.0000
Manganese (Mn)5.00007.0000
Chromium (Cr)23.000025.0000
Carbon (C)-0.0300

ASTM A312/A312M S34565 Material Mechanical Properties

ASTM A312/A312M is a standard specification for seamless and welded austenitic stainless steel pipes used for high-temperature and general corrosive service. This specification covers nominal wall thickness, minimum wall thickness, and ASTM's requirements for chemical composition, mechanical properties, and burst testing of these stainless steel pipes. we will focus primarily on the mechanical properties of this stainless-steel pipe, as the most important factor for assessing the suitability of a pipe for a particular application will be determined by its mechanical properties.

The mechanical properties of the ASTM A312/A312M S34565 steel are as follows:

YieldRp0.2 ≤ 117 (MPa)
TeileRm≤ 526 (MPa)
ImpactKV/Ku44(J)
ElongationA23%
Reduction in cross section on fractureZ11%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)244

ASTM A312/A312M S34565 Material Thermal Properties

The thermal performance parameters of the ASTM A312/A312M S34565 steel are as follows:

Temperature (°C)11719368
Modulus of elasticity (GPa)-886-
Mean coefficient of thermal expaion ×10-6/(°C)--32
Thermal conductivity (W/m·°C)-42.334.2
Specific thermal capacity (J/kg·°C)-143-
Specific electrical resistivity (Ω mm²/m)0.44--
Deity (kg/dm³)--414
Poisson’s coefficient, ν--132

ASTM A312/A312M S34565 Material Machining Technology

Machining ASTM A312/A312M S34565 steel is a complex process, but it can be highly rewarding if done correctly. The key to success is to select the right tools and cutting strategies, employ coolant strategies to reduce heat generation and tool wear, and utilize the right finishing techniques to achieve the desired surface quality. With experience and knowledge of how to best work with this special type of steel, skilled machinists can produce high-quality parts and components from ASTM A312/A312M S34565 steel.