SA-688 TP 304N

SA-688 TP 304N Stainless Steels to SA-688/SA-688M

SA-688 TP 304N - Specification & Application

  • SA-688/SA-688M - Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Chemical composition(wt.%) of SA-688 TP 304N grade: to SA-688/SA-688M

Elements Min.（≥） Max.（≤） Similar Remarks
C - 0.08
Si - 0.75
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.0 20.0
Ni 8.00 10.5
N 0.10 0.16

SA-688 TP 304N - Detail

Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Mechanical properties of grade SA-688 TP 304N SA-688/SA-688M

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)
981 (≥) 714 (≥) 41 21 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical properties of grade SA-688 TP 304N SA-688/SA-688M

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
418 (≥) 817 (≥) 44 22 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 231
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
433 162 386

Equivalent Grade

1 SUS304N2A 2 CNS 304N1 3 CNS 304N2 4 STS304N1 5 STS304N2 6 CNS 304N1 7 CNS 304N2 8 CNS 304N1 9 CNS 304N1 10 CNS 304N2 11 A 182 F 304N 12 A 213 TP304N 13 A 240 Type 304N 14 A 249 TP304N 15 A 276 304N 16 A 312 TP304N 17 A 336 Grade F304N 18 A 358 304N 19 A 376 TP304N 20 A 403 CR304N

Equivalent Products

Product shapes we supply:

We can customize the production of SA-688 TP 304N grade, contact us for the best solution.
–sales@specificsteel.com