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## What is the area of 12mm diameter bar?

Area of distributed reinforcement bars (cm2/m)
Bar Spacing (cm) Bars per meter Φ18
7.5 13.33 33.93
8.0 12.50 31.81
8.5 11.76 29.94

## How can I calculate my ideal weight?

Measure your waist-to-height ratio To calculate the WtHR, a person should divide their waist size by their height. If the answer is 0.5 or less, the chances are that they have a healthy weight. A woman who is 5 feet and 4 inches tall (163 cm), should have a waist measurement below 32 inches (81 cm).

## How do you calculate the weight of steel?

The formula for weight calculation is:

1. l = length in mm.
2. w = width in mm.
3. t = thickness in mm.
4. η = Specific material density ( e.g.: steel = 7.85 kg / dm³)

## What is the symbol of steel?

The Steelmark is a logo representing steel and the steel industry owned by the American Iron and Steel Institute, and used by it to promote the product and its manufacturers.

## What is raw steel?

n steel whose characteristics are determined by the amount of carbon it contains. cast steel. n steel containing varying amounts of carbon, manganese, phosphorus, silicon, and sulphur that is cast into shape rather than wrought.

## Will raw steel rust?

Here goes….. We supply items made from mild steel – if left untreated mild steel WILL rust (in days) if it gets wet, either directly or simply through moisture in the air. For this reason we don’t recommend untreated raw steel unless you specifically want a piece to rust.

## Is steel still banned?

After having played professional Counter-Strike for nine years, he retired in August 2020 after being signed by 100 Thieves as part of their VALORANT squad.

## Is steel a raw material?

Steel is made from iron ore, a compound of iron, oxygen and other minerals that occurs in nature. The raw materials for steelmaking are mined and then transformed into steel using two different processes: the blast furnace/basic oxygen furnace route, and the electric arc furnace route.

## What are 10 raw materials?

Examples of raw materials include: steel, oil, corn, grain, gasoline, lumber, forest resources, plastic, natural gas, coal, and minerals.

## What is raw material of steel?

98% of mined iron ore is used to make steel. As iron occurs only as iron oxides in the earth’s crust, the ores must be converted, or ‘reduced’, using carbon. The primary source of this carbon is coking coal. Coal is a key raw material in steel production.

## What is the largest quantity raw material for steel?

Today, it is estimated that the global steel industry used about 2 billion tonnes of iron ore, 1 billion tonnes of metallurgical coal and 575 million tonnes of steel scrap to produce about 1.7 billion tonnes of crude steel. Recycled steel (also called scrap steel) is one of the industry’s most important raw materials.

## Is coal used in steel production?

Coal and coke Coking coal is a key raw material in steel production. As iron occurs only as iron oxides in the earth’s crust, the ores must be converted, or ‘reduced’, using carbon. The primary source of this carbon is coking coal.

## What is used in making steel?

Steel is an alloy of iron and carbon. It can contain small quantities of silicon, phosphorus, sulfur and oxygen. The carbon content of steel is between 0.08 to 1.5 percent. This makes it harder than wrought iron but not as brittle as cast iron.

## How much does it cost to produce a ton of steel?

The price of steel (at the time of writing this) is about \$550 per ton. We can estimate the production costs due to the energy required by assuming that the creation of pig iron and the basic oxygen furnace use coal or natural gas to power the process and an electric arc furnace uses pure electricity.

## How much iron ore is used in steel?

Facts about iron ore It takes around 1.6 tons of iron ore to produce one ton of steel. The chemical symbol for iron is ‘Fe’ because of its Latin name Ferrum. We use 20 times more iron (in the form of steel) than all other metals put together.

## Does steel production use much energy and where is that energy source?

The production of primary steel is more energy intensive than the production of secondary steel (see Figure 2) due to the chemical energy required to reduce iron ore to iron using carbon-based reducing agents.

## How much energy does a blast furnace use?

It can be seen that blast furnace–BOF steelmaking route consumes 19.8–31.2 GJ energy per ton crude steel, while the EAF route using 100% steel scrap consumes 9.1–12.5 GJ energy per ton steel.

## Why is it called a blast furnace?

The Blast Furnace is a large steel structure about 30 metres high. The furnace gets its name from the method that is used to heat it. Pre-heated air at about 1000oC is blasted into the furnace through nozzles near its base. The largest Blast Furnaces in the UK produce around 60 000 tonnes of iron per week.

## How does a blast furnace work?

In a blast furnace, fuel (coke), ores, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with oxygen enrichment) is blown into the lower section of the furnace through a series of pipes called tuyeres, so that the chemical reactions take place throughout …

## Why is Coke used in a blast furnace?

Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. The carbon monoxide produced by its combustion reduces iron oxide (hematite) to the iron product.

2019-07-03