JIS G3459 SUS 347 HTP Introduce

JIS G3459 SUS 347 HTP is used in a wide variety of industries and applications, including water treatment and industrial process piping, structural and architectural pipes, automotive and marine pipes, sanitary piping, and medical equipment. Its versatility and technical advantages have made it one of the most widely used steel pipe standards in the world. JIS G3459 SUS 347 HTP is divided into three parts, depending on the grades of stainless steel used: stainless steel grades, tubing manufacturing method and operational requirements. Each grade of stainless steel is divided into two categories, depending on their chemical composition and mechanical properties: austenitic stainless steel, and ferritic and martensitic stainless steel.

Smelting temperature:1797°C - 1178°C

Application:stainless steel pipe

JIS G3459 SUS 347 HTP Material Chemical Composition

The chemical composition of the JIS G3459 SUS 347 HTP steel are as follows:

ElementMinMax
Silicon (Si)-1.0000
Sulfur (S)-0.0300
PhOsphorus (P)-0.0300
Nickel (Ni)9.000013.0000
Niobium (Nb)-1.0000
Manganese (Mn)-2.0000
Chromium (Cr)17.000020.0000
Carbon (C)0.04000.1000

JIS G3459 SUS 347 HTP Material Mechanical Properties

The mechanical properties of the JIS G3459 SUS 347 HTP steel are as follows:

YieldRp0.2 ≤ 375 (MPa)
TeileRm≤ 666 (MPa)
ImpactKV/Ku33(J)
ElongationA44%
Reduction in cross section on fractureZ13%
As-Heat-Treated ConditionSolution and Aging, Annealing, Ausaging, Q+T,etc
Brinell hardness (HBW)422

JIS G3459 SUS 347 HTP Material Thermal Properties

The thermal performance parameters of the JIS G3459 SUS 347 HTP steel are as follows:

Temperature (°C)14452229
Modulus of elasticity (GPa)-998-
Mean coefficient of thermal expaion ×10-6/(°C)--32
Thermal conductivity (W/m·°C)-31.344.2
Specific thermal capacity (J/kg·°C)-321-
Specific electrical resistivity (Ω mm²/m)0.23--
Deity (kg/dm³)--311
Poisson’s coefficient, ν--133