When working with steel vendors, they must be knowledgeable about the products they supply to your business and all the different steels they sell, their applications and specific properties. They should also have a good idea about products they don’t sell but which are crucial to the industry.
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Steel is used widely in modern society by manufacturers of a wide array of products and those who construct buildings, bridges and other infrastructure. Regardless of why a business or organization requires steel, vendors should be able to answer the following questions:
Steel is an alloy primarily made from iron that contains less than 2 percent carbon, with other elements like manganese, oxygen, phosphorus, silicon and sulfur added to give the steel certain characteristics. It’s also a relatively inexpensive alloy with high tensile strength, which is why it’s widely used.
Steel has myriad uses, including as a component in automobiles, buildings, home appliances, infrastructure, ships, tools, weaponry and many other modern-day products. Steel is also used in engineering applications and as an important construction material.
While iron occurs naturally in ore form, it’s also the primary element making up steel alloys. The main difference is that steel is stronger than iron, with superior compression and tension properties.
One of the most frequently asked questions of steel vendors involves why it’s not considered a metal. This has to do with the fact steel isn’t a pure element but rather an alloy comprised mostly of iron, which is a metal, and carbon, which isn’t a metal.
Various steels have differing properties depending on the elements within the alloy. But generally, steel:
While titanium can be alloyed with other metals – including aluminum or vanadium – to make it stronger than many types of low to medium grades of steel, the highest-rated stainless steel grades are stronger than these titanium alloys.
Steel is generally categorized into four types: alloy, carbon, stainless and tool steels.
The specific grade of steel that’s considered the strongest is in the 400 class of stainless steel, specifically, type 440. The 440 stainless grade is a type of cutlery steel with a higher carbon ratio. The 440 grade retains edges much better when properly heat-treated than other steels.
As one of the hardest stainless steel grades, it’s classified into four subsets. Categorized into 440A, 440B, 440C, and 440F stainless steel, these differ only concerning the amount of carbon they contain. Of these, 440C stainless steel is considered the strongest, comprising between 0.95-1.20 percent carbon. During the annealing process, 440 steel can be easily machined, worked, and manipulated into shape to increase strength further.
The most commonly used and versatile steel grade is also stainless. Type 304 stainless steel contains 18 percent chromium and 8 percent nickel, sometimes referred to as 18/8 steel.
There’s not just one kind of stainless steel. The term applies to a group of iron-based alloys that contain at least 10.5 percent chromium, making stainless steel so resistant to corrosion. This chromium forms a very thin layer on the steel’s surface to prevent rust and other types of corrosion.
In addition to chromium, carbon content in stainless steels can be no more than 1.2 percent. Stainless steel alloys also contain varying amounts of other elements, such as manganese, molybdenum, nickel, niobium, nitrogen, silicon, and others. These other materials contribute to the properties of specific types of stainless steel.
Yes, and yes. Though many believe stainless steel won’t rust wrongly, it’s possible under certain conditions for stainless steel to rust, though its chemical makeup helps prevent rusting. Additionally, there are other types of corrosion besides oxidation that makes steel rust.
When stainless steel surfaces are exposed to chemicals or other corrosive substances for too long and aren’t properly cared for, they begin to pit. This pitting affects the performance of a stainless steel surface and its aesthetics.
All steels are uniquely sustainable and capable of being used and recycled repeatedly. Steel production also requires less energy than producing other types of materials. Further, the steel industry has made great strides toward limiting the pollution it produces. For example, fabricating a ton of steel requires just 40 percent of the energy it took to make in .
Yet steel knowledge isn’t the only thing to glean from questions posed to steel suppliers. Vendors should also show that they’re trustworthy and honorable when doing business. To ensure that they are these things as well, another set of questions should be asked of steel vendors:
It’s important to understand the final cost of materials like steel. Vendors sometimes charge a restocking fee for returns, while others may invoice for delivery or fuel surcharges. It’s important to ask a steel supplier to identify these costs so that the total cost for material is known and can be compared with prices from other vendors.
This is an important aspect of any business, including steel suppliers. If there’s a problem with the steel that leads to other costly expenses, the steel vendor’s policy must cover it. it’s also a good idea to get a copy of their liability insurance certificate.
For distributors, steel vendors mustn’t sell to end users at sharply discounted rates. Some manufacturers will work with a distributor until they’re established, then cut them out to make higher profits. That’s not good for any distributor’s business.
Sometimes the product doesn’t sell, so it’s important to understand a steel vendor’s return policy. A guaranteed sell-through allows a business to return unsold materials for either cash or credit.
With COVID and current world events having caused issues with supply chains, this is a very important question to ask steel vendors. A lack of vital materials will strangle a business, so relying on suppliers that don’t deliver isn’t an option. Steel suppliers that offer discounts for a product that doesn’t arrive on time, or who will pay back customers for steel they had to get from another source will help allay the costs of delays or mistakes.
For distributors, it’s important to get a price that gels with the profit their business needs to make in order to grow. For instance, if a steel vendor states that the gross margin should only be 25 percent on the steel they sell, while your business needs a 30 percent margin to stay competitive, this relationship probably won’t work out long term.
Knowing what might make steel vendors change their pricing structure is also important. Sudden price increases in material or services can cause havoc with any business. It’s important to know if prices are tied to inflation, and how much notice will be given should steel prices rise. Additionally, it’s not a bad idea to ask steel vendors if they reduce prices to their customers should their price go down.
Steel vendors sometimes offer discounts for bulk buys. This can affect profits, so it’s a good idea to know in advance about such incentives.
It’s important when a supply of any material arrives to ensure that it’s in good condition, and this also applies to steel. Vendors should be asked whether there’s a certain grace period after receiving their product. It’s important to check contracts to allow at last three days to check an order prior to taking responsibility for it.
This final question can be applied to any vendor of products or services. It’s these traits that businesses working with steel vendors should look for:
Also known as side or disc grinders, angle grinders are portable power tools specifically designed for grinding and polishing. They are used across a variety of workplaces and industries including metalworking, construction, and emergency rescue.
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Power to operate the angle grinder may be generated via an electric motor, petrol engine, or compressed air. The handheld angle grinder is the most commonly used and recognised model for practical applications.
The size of the disc should have a direct bearing on your choice of angle grinder. The two most common disc sizes are 4.5” (115mm) and 9” (230mm). Grinders with larger discs are particularly well suited to heavy-duty applications, whereas those with smaller discs are ideal for finer work. Additionally, it’s worth bearing in mind that smaller grinders have a relatively high RPM and smaller discs are also more prone to wearing down quite rapidly.
The following factors should be considered when buying an angle grinder:
Angle grinders typically incorporate a range of safety features for the effective prevention of injury. The slow start is one such feature, stopping the grinder from twisting immediately after being started. The anti-kickback is another valuable feature which ensures that the motor cuts out if the angle grinder gets caught up dangerously on any material. Restart protection will ensure that the angle grinder stays switched off in the event that it has overheated or cut out and been left with the power on. An additional safety feature is the paddle, or deadman’s switch, which ensures that the grinder only operates when held in two hands and prevents any spinning should the switch be released.
There are a variety of safety procedures which should be followed when using an angle grinder. To begin with, you should equip yourself with a complete set of personal protective equipment, including a dust mask, ear defenders, and safety goggles. The protective clothing should act as a safeguard against contact with any sparks that fly up when using the angle grinder. There should also be minimal risk of your clothes catching fire during operation.
It is expected that you will alert your co-workers and anybody else present on the worksite before you begin using an angle grinder. You should also take care to organise the wiring in order to prevent serious electrical incidents. The disc should be completely static before the angle grinder is positioned upon a surface to ensure that it doesn’t spin and cause significant damage.
These safety procedures should also be followed:
There is a selection of key factors to consider when comparing angle grinders. Read the following descriptions before proceeding to weigh up your buying choices.
The angle grinder disc may also be referred to as a head or wheel. There is a wide range of disc sizes available, but some of the most common sizes include 115mm (4 ½”) and 230mm (9”). The most appropriate choice of disc size will depend on the task that you want to carry out, however, you must ensure that the disc is compatible with your grinder.
Angle grinder wattage (W) is specific to the amount of power which is generated. The required wattage level will depend on the size of the discs. The input power of a corded model will be rated in terms of amps (A), with the corresponding input for cordless models being rated in terms of volts (V). The input of pneumatic angle grinders is presented in terms of CFM (cubic feet per minute) and there is typically a corresponding pressure in pounds per square inch (PSI).
You should be aware that angle grinders with the capacity for small discs generate a higher RPM than larger models. It is common for the rotations per minute (RPM) to be expressed in terms of ‘no-load speed’, which is equivalent to the fastest rotation without a disc being installed. A medium-sized angle grinder is expected to go faster than 8,000 RPM, while a larger angle grinder may generate around 6,000 RPM. However, the larger angle grinder will have far more power.
These discs are purpose made for the shaping of metals. They also allow for the efficient removal of materials and prevention of surface damage. Use of the grinding discs is expected to minimise the need for subsequent processing, allowing preparation time to be saved.
These discs are purpose made to cut hard items and materials such as rods, bolts, rebars, and metal piping.
Sanding pads allow for the efficient removal of old paint in the process of surface preparation. They are also suitable for coarse and fine sanding.
The grinding wheel is an expandable wheel, made from an abrasive compound. It allows for a variety of grinding and abrasion functions. Grinding wheels and other forms of bonded abrasives have two key features – the abrasive grains which allow for efficient cutting, and the bond which combines and supports the grains during the cutting process.
Grinding discs are suitable for metal and stone applications across a range of machine sizes. The main use of such discs is in the removal of materials. However, they can also be used for the finishing and preparation of stone and metal surfaces.
These wheels allow for the effective removal of paint and rust. They also enable the removal of burrs from rough-cut metal surfaces.
These wheels and discs are particularly suitable for the cutting of concrete, tile, masonry, and granite. However, it is important to make the appropriate selection and use of the cutting blade in accordance with the technique. There are diamond blades suitable for dry and wet cutting.
These oxide-based wheels are suitable for a wide range of applications, including woodworking and the cutting of crumbly materials like cutting boards.
The flap disc performs a similar function to the wire brush yet features flaps rather than wires. This allows for the effective combination of weld beads with the rest of the metal.
There is a wide variety of angle grinders available, with models suitable for amateur and professional purposes. You can choose from tools for specific applications such as cutting, polishing and grinding, but it is important to select the angle grinder which is best suited to your intended use.
Some of the most popular brands include:
As previously mentioned, there is a great selection of cordless angle grinders which run on battery power. You can browse our full range of cordless angle grinders to discover the best model to suit your requirements.
It is essential that you disconnect the angle grinder from the electric power supply prior to fitting the disc. You should then press the spindle lock button and nudge the disc until it fits securely in place. The spindle lock button should be held while you remove the clamping flange, which is then attached so the flat surface comes into direct contact with the disc. A wrench may be used to tighten and firmly secure the flange.
The versatile, durable angle grinder is suitable for applications such as cutting, grinding, polishing and sharpening. Conversely, the disc cutter is a small, single-handed cutting blade which is best suited to light cutting applications. The angle grinder is typically heavier and requires some strength to control, while the disc cutter is lighter weight and offers greater manoeuvrability.
No matter the angle grinder that you are using, there will always be a risk of breaking the abrasive wheel. However, it is possible to minimise this risk by checking the discs, ensuring the correct mounting, and following the safety procedures. It will also be necessary to mount the abrasive wheels correctly on the corresponding tool.
Angle grinder damage may also occur as a result of kickback. This can happen when the grinder jams with the material being cut or shaped and is more likely to occur if you are using the incorrect wheel or cutting at an inappropriate speed.
A high-powered angle grinder can be used to cut through any type of metal. However, there will be a risk of flying sparks and debris when cutting different types of metals. It will be necessary to wear goggles and other types of personal protective equipment during such activities.
A high-powered angle grinder will be able to cut through the vast majority of materials. However, diamond and multi-layered materials have a high level of cutting resistance. You should always use an angle grinder in accordance with the manufacturer’s instructions and only perform grinding tasks if you are completely confident and assured of safety.
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