What is m31 steel?
Description / Abstract: AASHTO M 31M/M 31, 2021 Edition, 2021 – Standard Specification for Deformed and Plain Carbon and Low-Alloy Steel Bars for Concrete Reinforcement. This specification covers deformed and plain carbon and low-alloy steel concrete reinforcement bars in cut lengths or coils.
What is the standard ASTM for reinforcing steel?
ASTM Stainless Steel Rebar Standard Specifications The ASTM A955/A955M Standard Specification for Deformed and Plain Stainless-Steel Bars for Concrete Reinforcement is the main Standard for stainless steel rebar in the USA and Canada.
What is ASTM A706?
ASTM A706 rebar is a specification given to low-alloy reinforcing bars in either standard lengths or coiled configurations. This rebar grade is processed in open hearths, electric furnaces, or basic oxygen furnaces and is available in numerous grades, including grade 60 and grade 80.
What is ASTM A 615?
ASTM A615 covers deformed and plain carbon steel bars for concrete reinforcement. This specification covers bars and coils in four grades, Grade 40, Grade 60, Grade 75, and Grade 80. The grade designates the yield strength of the material, i.e. Grade 60 has a 60ksi minimum yield.
When did grade 60 rebar become common?
1959
Grades 33, 40, and 50 were in common use from the early 1900s through the early 1960s. Grades 60 and 75 reinforcing bars appeared in 1959 with the publication of ASTM A432 and ASTM A431, respectively.
When did 60 ksi rebar become common?
1960s
Rebar in use today first became common in the 1940s, the most widely used type had a tensile strength, or ksi, of 40. In the 1960s, American construction moved onto 60 ksi bars, which have been the standard ever since.
Can Grade 60 rebar be welded?
Three types of welding can be used for welding rebar, which are: SMAW- Shielded Metal Arc Welding (stick/ arc welding), GMAW- gas metal arc welding (MIG), and FCAW- Flux Core Arc Welding. For example, if you’re using rebar of A615 grade 60, you could either use SMAW or GMAW methods.
What size is grade 60 rebar?
Grade 60 All-Thread Rebar
| Bar Designation Nominal Diameter & Pitch | Minimum Net Area Thru Threads | Nominal Weight |
|---|---|---|
| #6 – 3/4” – 5 (19 mm) | 0.44 in2 (284 mm2) | 1.5 lbs/ft (2.4 kg/m) |
| #7 – 7/8” – 5 (22 mm) | 0.60 in2 (387 mm2) | 2.0 lbs/ft (3.0 kg/m) |
| #8 – 1” – 3-1/2 (25 mm) | 0.79 in2 (510 mm2) | 2.7 lbs/ft (3.9 kg/m) |
What are Grade 60 bars?
Grade 60 rebar offers a minimum yield strength of 60,000 pounds per square inch, or 420 megapascals on the metric grading scale. It also features a continuous line system, with one line running along the length of the bar which is offset a minimum of five spaces from the center.
Is rebar high carbon steel?
So what kind of metal is rebar? Usually standard rebar is recycled and tempered carbon steel. In reality, there are all kinds of different steels that are used based on application.