SA-688 TP XM-29 - Cast Iron and Cast Steel

SA-688 TP XM-29 Stainless Steels to SA-688/SA-688M

SA-688 TP XM-29 - 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 XM-29 grade: to SA-688/SA-688M

Elements	Min.（≥）	Max.（≤）
C	-	0.08
Si	-	1.00
Mn	11.5	14.5
P	-	0.06
S	-	0.03
Cr	17.0	19.0
Ni	2.25	3.75
N	0.20	0.40

SA-688 TP XM-29 - Detail

SA-688 TP XM-29

Mechanical properties of grade SA-688 TP XM-29 SA-688/SA-688M

Proof strength R_p0.2 (MPa)	Tensile strength R_m (MPa)	Impact energy KV (J)	Elongation at fracture A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
995 (≥)	574 (≥)	44	34	23	Solution and Aging, Annealing, Ausaging, Q+T,etc	221

Physical properties of grade SA-688 TP XM-29 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
465 (≥)	341 (≥)	22	31	31	Solution and Aging, Annealing, Ausaging, Q+T,etc	232
Temp. °C/°F	Creep strain limit (10000h) (Rp1,0) N/mm2	Creep rupture strength (10000h) (Rp1,0) N/mm2
126	129	245

Equivalent Grade

1 A 240 Type XM-29 2 A 249 TPXM-29 3 A 269 TPXM-29 4 A 276 XM-29 5 A 312 TPXM-29 6 A 314 XM-29 7 A 358 XM-29 8 A 412 Type XM-29 9 A 479 XM-29 10 A 580 Type XM-29

Equivalent Products

Product shapes we supply:

We can customize the production of SA-688 TP XM-29 grade, contact us for the best solution.
–sales@specificsteel.com