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Japanese Standard (JIS)

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Japanese Standard (JIS)

Chemical composition, Mechanical properties and weld test properties of tube according to standards.

STANDARD TYPE CHEMICAL COMPOSITION MECHANICAL PROPERTIES WELD TEST PROPERTIES
C% Mn% So/o P% Si% YS KG/SQ MM TS KG/SQ MM %EL Min FLARING % Flattening @90 Deg Flattening @180 Deg Bending Crushing Flanging
JIS 3445/1983 STKM-1lA 0.12 max 0.60 max 0.04 max 0.04 max 0.35 max - 30 35 - 1/2 D 1/2 D 180°/40 - -
STKM-12A 0.20 max 0.60 max 0.04 max 0.04 max 0.35 max 18 35 35 - 2/3 D 2/3 D 90°/60 - -
STKM-12B 0.20 max 0.60 max 0.04 max 0.04 max 0.35 max 28 40 25 - 2/3 D 2/3 D 90°/60 - -
STKM-12C 0.20 max 0.60 max 0.04 max 0.04 max 0.35 max 36 48 20 - - - - - -
STKM-13A 0.25 max 0.30 max 0.04 max 0.04 max 0.35 max 22 38 30 - 2/3 D 2/3 D 90°/60 - -
STKM-13B 0.25 max 0.30 max 0.04 max 0.04 max 0.35 max 31 45 20 - 3/4 D 3/40 90°/60 - -
STKM-13C 0.25 max 0.30 max 0.04 max 0.04 max 0.35 max 39 52 15 - - - - - -
JIS 4361/1948 STB-35 0.18 max 0.30 max 0.35 max 0.35 max 0.35 max 18 35 30 20 3t - - - -
STB-42 0.32 max 0.30 max 0.35 max 0.35 max 0.35 max 26 42 30 20 3t - - - -
JIS 3466/1982 SKTMR-42 0.25 max 0.30 max 0.04 max 0.04 max - 25 41 23 - - - - - -
SKTMR-50 0.18 max 1.50 max 0.04 max 0.04 max 0.55 max 33 so 23 - - - - - -