Strong, cost-effective, and highly versatile, steel is the material of choice for a wide range of residential, commercial, and industrial projects.
At Acier Groupe David, we offer a vast inventory of steel in various forms. Whether you’re erecting a structure, reinforcing concrete, or manufacturing a mechanical part, you’ll find the steel suited to your technical requirements, along with cutting, bending, and fast delivery services to simplify every stage of your project.
Our range of high-quality steel, designed to meet your most demanding needs. Solidify your projects with our exclusive selection!
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Understanding the Main Types, Grades, and Steel Alloys
At Acier Groupe David, many of our steel products are available in different types, grades, or alloys to meet the specific requirements of construction, manufacturing, machining, and industrial projects.
Here’s a quick guide to help you navigate steel selection when working with a steel distributor.
Mild & Structural Steel (General Construction)
Associated Standard: CSA G40.21
Low-carbon steels used in welded structures, beams, plates, and general assemblies.
Examples:
- 44W
- 50W
- 500W
In these designations, the number indicates the minimum yield strength, while “W” stands for “Weldable.”
- 44W is often the Canadian equivalent of the American ASTM A36 but generally has slightly stricter chemical and mechanical specifications.
- 50W and 500W offer better atmospheric corrosion resistance. The 500W is commonly used in Quebec Ministry of Transport projects and is equivalent to 50W.
Carbon Steels (Machining, Manufacturing, Fabrication)
Associated Standard: AISI-SAE
These steels are widely used for machining mechanical parts.
Examples:
- 1018
- 1045
- 1144
- 4140
- 4340
- 8620
The first two digits indicate the steel family or type, based on the main alloying elements.
For example:
- 10XX = Carbon steel (non-alloyed)
- 41XX = Alloy steel (chrome-molybdenum)
The last two digits indicate the carbon content in hundredths of a percent. Generally, the higher the number, the harder and stronger the steel, but it may also be more difficult to weld or form.
Tool Steels
Associated Standard: AISI (specific to tool steel)
High-carbon or alloy steels used to manufacture cutting tools, dies, punches, and wear-resistant components.
Examples from Acier Groupe David:
- W-1
- O-1
- A-2
The letters indicate the heat treatment or specific properties of the steel:
- W = Water-hardening
- O = Oil-hardening
- A = Air-hardening
The number differentiates grades or variants within the same series.
Abrasion-Resistant Steels
Designed to offer exceptional resistance to wear, impact, and tensile stress while maintaining good weldability and formability in some cases.
These grades usually start with AR for “Abrasion Resistant,” with the following numbers indicating nominal Brinell hardness, though exact ranges may vary by manufacturer.
CHT Steels
Not associated with an official standard but used by some suppliers to designate heat-treated plates with specific hardness, often comparable to AR steels.
Examples:
- CHT100
- CHT400
- CHT450
- CHT500
Tubing & Pipes
Pipe and tube codes often reference specific standards. Examples:
| Code | Standard & Description |
| A500 | ASTM A500 – Cold-formed structural steel tube (square/rectangular), welded |
| A513 | ASTM A513 – Welded mechanical tube, high-precision, cold-formed |
| A519 | ASTM A519 – Seamless mechanical tube (carbon or alloy steel) |
| A53 | ASTM A53 – Steel pipe, welded or seamless, for pressure or general use |
| A106 | ASTM A106 – Seamless pipe for high temperature & pressure |
| J524 | SAE J524 – Annealed, highly formable tube for hydraulic systems |
| J525 | SAE J525 – Welded hydraulic tube, less malleable than J524 |
Finishes & Treatments
Various finishes or treatments can be applied to steel to improve durability, appearance, or ease of fabrication.
Hot-Rolled Steel (H.R.)
Rough surface, cost-effective, used in structures.
Hot-Rolled Pickled & Oiled Steel (H.R.P.O.)
Cleaner surface, ideal for forming or painting.
Cold-Rolled Steel (C.R.)
Smoother surface, better dimensional tolerance, ideal for precision machining.
Satin Finish
Reduces glare.
Galvanized Steel
Typically hot-dipped, coated in zinc for corrosion protection.
Need Help Choosing the Right Steel?
At Acier Groupe David, our team is here to guide you. We take the time to understand your needs and recommend the right material in the right format.
Contact us today for technical advice or a personalized quote.
We Can Even Cut and Bend Your Steel to Size
To simplify assembly and speed up on-site or workshop execution, we can prepare your plates, profiles, or bars according to your plans.
Our machinery allows us to work with steel of various thicknesses with precision, and each piece is carefully prepared in the correct format to minimize material waste and avoid rework.
