A 312 TP304LN Stainless Steels to A 312/A 312M (2012)

A 312 TP304LN - Specification & Application

  • A 312/A 312M (2012) - Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

Chemical composition(wt.%) of A 312 TP304LN grade: to A 312/A 312M (2012)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.0 20.0
Ni 8.00 12.0
N 0.10 0.16

A 312 TP304LN - Detail

Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

Mechanical properties of grade A 312 TP304LN A 312/A 312M (2012)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
891 (≥) 858 (≥) 12 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical properties of grade A 312 TP304LN A 312/A 312M (2012)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
844 (≥) 522 (≥) 22 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 223
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
186 792 641

Equivalent Products

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