What Is ASTM A178 / ASME SA178 Tubing?

ASTM A178 tubing is carbon steel and carbon manganese ERW tubing used in boilers, boiler flues, super heaters, ASTM A178 is available in A178 Grade A (low carbon steel), A178 Grade C (medium carbon steel), and A178 Grade D (carbon manganese steel). The ASTM A178 Specifications are listed below with the Chemical Composition and Mechanical Properties.

For more information on our ASTM A178 / ASME SA178 ERW (Electric Resistance Welded) Carbon Steel / Carbon Manganese Steel Boiler Tubes please feel free to contact Kevin Phillips directly at (706) 965-9909 / Email or Trent Hebert at (225) 647-9207 / Email

Check Stock: SA178 A Check Stock: SA178 C Check Stock: SA178 D

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See Also: SA178a / SA178c / SA178d

ASTM A178 Chemical Composition

Grade	Carbon	Manganese	Phosphorus	Sulfur	Silicon
ASTM A178 Gr A	0.06% - 0.18%	0.27% - 0.63%	0.035% Max	0.035% Max	-
ASTM A178 Gr C	0.35% Max	0.80% Max	0.035% Max	0.035% Max	-
ASTM A178 Gr D	0.27% Max	1.00% - 1.50%	0.30% Max	0.015% Max	0.10% Min

ASTM A178 Mechanical Properties

Grade	P #	Tensile Strength	Yield	Max Hardness	Check Inventory
ASTM A178 Gr A / SA178A	P 1	ksi: 47 MPa: 325	ksi: 26 MPa: 180	77 HRB (Rockwell B)	A178 Gr A Inventory
ASTM A178 Gr C / SA178C	P 1	ksi: 60 MPa: 415	ksi: 37 MPa: 255	79 HRB (Rockwell B)	A178 Gr C Inventory
ASTM A178 Gr D / SA178D	P 1	ksi: 70 MPa: 485	ksi: 40 MPa: 275	77 HRB (Rockwell B)	A178 Gr D Inventory