SA178A / ASTM A178 Grade A Boiler Tubes


SA 178A is an ERW (electric resistance welded) low carbon steel boiler tube used in super heaters, water wall panels, heat exchangers, condensers, marine application, refineries, paper pulping, petrochemical applications, pressure vessels, and general engineering applications. It is also used in coal, thermal and oil power generation plants.

​As a leading boiler tube supplier in America, Metro Boiler Tube Co., Inc stocks a large inventory of Webco Industries SA178A boiler tubing for sale.

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See Also: ASTM A178 / SA178 C / SA178 D

SA178A Boiler Tube Stock
Metro Inventory

Below is a list of our SA178A boiler tube inventory. This list is updated weekly. If your not finding the size looking for please be sure to look at our SA178A random inventory and As always feel free to give us a Call, and we will check our numerous boiler tube suppliers for you.

What Are Boiler Tube Randoms?

SA178A Boiler Tube Random Lengths
Georgia Inventory

Below is a list of our SA178A boiler tube inventory.This list is updated weekly. If your not finding the size looking for please be sure to look at our SA178A random inventory and As always feel free to give us a Call, and we will check our numerous boiler tube suppliers for you.

What Are Boiler Tube Randoms?

SA178A Boiler Tube Random Lengths
Louisianna Inventory

Below is a list of our SA178A boiler tube randoms.This list is updated weekly. If your not finding the size looking for please be sure to look at our SA178A random inventory and As always feel free to give us a Call, and we will check our numerous boiler tube suppliers for you.

What Are Boiler Tube Randoms?

SA178 A / ASTM A178 Grade A
Tubing Specifications

SA178 A / ASTM A178 Gr A
Chemical Composition
Carbon: 0.06% - 0.18%Silicon: N/A
Manganese: 0.27% - 0.63%Nickle: N/A
Phosphorus Max: 0.035%Chromium: N/A
Sulfur Max: 0.035%Molybdenum: N/A

SA178 A / ASTM A178 Gr A
Mechanical Properties
Tensile Strength:ksi: 47 MPa: 325
Yield:ksi: 26 MPa: 180
Maximum Hardness:72 Max. Rockwell B (HRB)

SA-178-A is a P1 Material. Elongation in 2in. or 50mm, min. %: 35.

What is the difference between ASTM A178 Gr A, Gr C, Gr D?

See Also: SA178 C Specs / SA178 D Specs


Other SA178 Grades


SA178A Applications


  • Pulp And Paper
  • Chemical Processing
  • Refineries
  • Steam Locomotives
  • Industrial Process
  • Heat Exchangers
  • Condensors
  • Pressure Vessels
  • General Engineering

Quick Information



Sales Team


Sam Long - Metro Boiler Straight Tube Division Manager

Sam Long

Straight Tube Division Manager

Trent Hebert - Louisiana Division Manager

Trent Hebert

Louisiana Division Manager

Lucas Doperalski - Metro Boiler Tube Straight Tube Sales

Lucas Doperalski

Straight Tube Sales

Emergency Work


Our Shop Stay Active 7 Days A Week And We Have An Emergency Number With On Call Employees To Handle Any After Hours Emergency Work.

We Have The Ability To Arrange Hot Shot Drivers For Quick Deliveries On Nights And Weekends.

Emergency / After Hours Contacts

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