What is Steel?

Table of Contents

What is Steel?

CNC Machined Cold-Rolled Steel

Steel, a versatile metal alloy primarily composed of iron and carbon, is a testament to human ingenuity. Its high strength-to-weight ratio, corrosion resistance, and ability to be heat-treated and shaped into various products make it a marvel of engineering. Many industries use this material, such as construction, transportation, machinery, and many others, which is a testament to its versatility and potential.

How is steel made?

Steel is a widely used and versatile material across various industries. During the steel-making process, iron ore, coal, and limestone are melted in a furnace at extremely high temperatures, usually around 1,500°C (2,700°F), in smelting, resulting in molten pig iron.

Then, molten pig iron is refined in a basic oxygen furnace or electric arc furnace to remove carbon, silicon, manganese, phosphorus, and sulfur impurities. Additionally, alloying elements like chromium, nickel, and molybdenum give steel-specific properties.

Once it achieves the desired chemical composition, the molten steel is cast into ingots or continuously cast into various shapes such as slabs, billets, or blooms. After this step, these semi-finished products go to rolling mills. During this stage, shaping the material into final products like sheets, bars, pipes, and structural shapes.

Throughout the steel-making process, strict quality control measures ensure that the final product meets the required specifications and standards. This attention to detail makes this material reliable and versatile, and it finds various applications, from skyscrapers and bridges to automobiles and household appliances.

Smelting Furnace for extracting steel from ore.

What are the mechanical properties of steel?

Many industries use steel because of its exceptional mechanical properties. It is renowned for its high strength-to-weight ratio, outstanding hardness, ductility, toughness, and weldability. At Prototek Digital Manufacturing, we harness the material’s mechanical properties to provide high-quality products and services customized to your requirements.

Corrosion Resistant

This material is known for its high durability, strength, and corrosion resistance. Its ability to maintain integrity over extended periods makes it ideal for use in harsh environments and outdoor applications.

Ductility

Ductility, the ability of this material to undergo deformation without fracturing, is also a valuable mechanical trait. Ductile steel can be bent, shaped, and formed into complex geometries, enabling diverse manufacturing capabilities.

Hardness

Hardness is another important mechanical property of steel. Its ability to resist indentation, abrasion, and wear is critical for components that experience high levels of friction and impact. Heat treatment processes can optimize this material’s hardness for specific applications.

Strength

One of steel’s primary mechanical properties is its strength. Its high tensile, compressive, and shear strengths are ideal for load-bearing structures, machinery, and tools. Its chemical composition and manufacturing processes influence its strength.

Weldability

Considering steel’s weldability when fabricating metal components is crucial, as this characteristic directly impacts the ease and strength of joining the material’s pieces together. Factors such as its composition, the type of welding process, and the specific requirements of the metal components influence the weldability of this material. 

Sheet metal bending steel.

What types of steel are there?

Steel is a versatile and widely used material in manufacturing and construction. Several different types exist, each with unique properties and applications. This section will explore its common types and mechanical characteristics.

Carbon Steel

Carbon steel is one of the most common types of this material, containing varying amounts of carbon. It is strong, durable, and relatively inexpensive to produce. Industries like construction, automotive parts, tools, and machinery commonly use this material.

Stainless Steel

Stainless steel is an alloy containing chromium, which gives it superior corrosion resistance. Using this material in kitchen appliances, medical equipment, and outdoor furniture makes sense due to its ability to withstand harsh environments.

Steel Alloy

Steel alloys add nickel, chromium, or molybdenum to steel, resulting in a stronger, more durable, and more resistant to wear and tear material. Industries such as aerospace, automotive, and energy commonly use this material.

Tool Steel

Tool steel is an alloy that maintains its hardness and strength at high temperatures. It is commonly used to produce cutting tools, dies, and other industrial equipment.

Each type has unique properties and applications, making it an essential material in various industries. At Prototek Digital Manufacturing, we have the expertise and capabilities to work with multiple types of this material to meet your manufacturing needs.

Quality control for a steel part.

Which industries use steel?

Steel is a versatile and essential material used across various industries. As a leading digital manufacturing partner, Prototek is proud to support customers in leveraging its unique properties to drive innovation and success.

It plays a vital role in shaping our world, from the towering skyscrapers that define our skylines to the automobiles that get us where we need to go. The construction industry relies on these materials for their strength, durability, and cost-effectiveness, utilizing them in everything from structural beams to reinforcing bars. It is a testament to the impact and importance of our work in the steel industry.

Additionally, the automotive sector is another major consumer of this material used to manufacture vehicle frames, body panels, engine components, and more. Its strength and lightweight properties make it ideal for this fast-paced industry.

Beyond construction and transportation, steel also finds widespread use in the energy, defense, and consumer goods sectors. For instance, power generation facilities, military equipment, and household appliances incorporate this material as a critical material—furthermore, even the agricultural industry leverages it for farm equipment and storage silos.

Across this diverse range of applications, steel continues to be an indispensable resource that enables innovation, productivity, and progress. 

A plasma cutter cutting parts.

What are the benefits of using this material?

Steel is a remarkably versatile and enduring material widely utilized across various applications. Its exceptional strength-to-weight ratio, corrosion resistance, and fabrication ability to create multiple shapes and forms make it an ideal choice for construction, manufacturing, and infrastructure projects. In addition, steel’s recyclability and sustainability further contribute to its appeal as a material of choice for modern applications.

Cost-Effectiveness

Steel is not just a high-performing material; it’s also a wise investment. Its cost-effectiveness and favorable balance between performance and affordability make it a top choice for many applications. This reassurance about the value of this material in your projects is one of its many benefits.

Recyclability

It is highly recyclable, allowing for its reuse and repurposed, reducing waste and contributing to a more sustainable CNC Machining and sheet metal fabrication process.

Strength and Durability

Steel is a solid and resilient material, making it ideal for applications that require high load-bearing capacity and long-lasting performance.

Versatility

Fabricating it by shaping and customizing it to meet a variety of design and functional requirements makes it a popular choice across industries.

welded parts with MIG

Why choose this material for your project?

Steel is a versatile and durable material that offers numerous advantages for your project. Not only does its exceptional strength-to-weight ratio make it an ideal choice for a wide range of applications, but it is also highly resistant to corrosion, ensuring long-lasting performance and the ability to withstand the test of time. Moreover, this highly recyclable material makes it an environmentally friendly option that aligns with sustainable manufacturing practices. With Prototek’s expertise in CNC machining and sheet metal fabrication, we can help you leverage the full potential of steel to bring your vision to life.

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FAQs

What is steel?

It is a strong, durable, versatile metal alloy composed primarily of iron and carbon. The construction, transportation, and various other industries use this material.

Does steel rust?

It can rust, but the degree of rusting depends on the type of steel and environmental factors. Proper maintenance and protective coatings can help prevent or minimize steel corrosion.

Is steel magnetic?

It is a magnetic material, meaning it can be attracted to magnets. This property is due to the iron content in steel, which gives it its magnetic properties.

What industries use steel?

Steel is versatile in various industries, including construction, automotive, aerospace, machinery, and infrastructure development.

What capabilities at Prototek use steel?

At Prototek, we offer precision CNC machining and sheet metal fabrication.

The content on this blog post is for informational purposes only. Prototek does not make any declaration or guarantee, whether expressed or implied, regarding the information’s accuracy, completeness, or validity. Any performance parameters, geometric tolerances, specific design features, quality and types of materials, or processes should not be assumed to represent what will be delivered by third-party suppliers or manufacturers through our network. It’s crucial to note that buyers seeking quotes for parts are responsible for defining the specific requirements for their project.

Standard Drill Bit Sizes

Drill Size

Imperial

Metric

#107

0.0019 in

0.0483 mm

0.05 mm

0.0020 in

0.0500 mm

#106

0.0023 in

0.0584 mm

#105

0.0027 in

0.0686 mm

#104

0.0031 in

0.0787 mm

#103

0.0035 in

0.0889 mm

#102

0.0039 in

0.0991 mm

0.1 mm

0.0039 in

0.1000 mm

#101

0.0043 in

0.1092 mm

#100

0.0047 in

0.1194 mm

#99

0.0051 in

0.1295 mm

#98

0.0055 in

0.1397 mm

#97

0.0059 in

0.1499 mm

#96

0.0063 in

0.1600 mm

#95

0.0067 in

0.1702 mm

#94

0.0071 in

0.1803 mm

#93

0.0075 in

0.1905 mm

0.2 mm

0.0079 in

0.2000 mm

#92

0.0079 in

0.2007 mm

#91

0.0083 in

0.2108 mm

#90

0.0087 in

0.2210 mm

#89

0.0091 in

0.2311 mm

#88

0.0095 in

0.2413 mm

#87

0.0100 in

0.2540 mm

#86

0.0105 in

0.2667 mm

#85

0.0110 in

0.2794 mm

#84

0.0115 in

0.2921 mm

0.3 mm

0.0118 in

0.3000 mm

#83

0.0120 in

0.3048 mm

#82

0.0125 in

0.3175 mm

#81

0.0130 in

0.3302 mm

#80

0.0135 in

0.3429 mm

#79

0.0145 in

0.3680 mm

1/64 in

0.0156 in

0.3969 mm

0.4 mm

0.0158 in

0.4000 mm

#78

0.0160 in

0.4064 mm

#77

0.0180 in

0.4572 mm

0.5 mm

0.0197 in

0.5000 mm

#76

0.0200 in

0.5080 mm

#75

0.0210 in

0.5334 mm

#74

0.0225 in

0.5715 mm

0.6 mm

0.0236 in

0.6000 mm

#73

0.0240 in

0.6069 mm

#72

0.0250 in

0.6350 mm

#71

0.0260 in

0.6604 mm

0.7 mm

0.0276 in

0.7000 mm

#70

0.0280 in

0.7112 mm

#69

0.0292 in

0.7417 mm

#68

0.0310 in

0.7874 mm

1/32 in

0.0313 in

0.7938 mm

0.8 mm

0.0315 in

0.8000 mm

#67

0.0320 in

0.8128 mm

#66

0.0330 in

0.8382 mm

#65

0.0350 in

0.8890 mm

0.9 mm

0.0354 in

0.9000 mm

#64

0.0360 in

0.9144 mm

#63

0.0370 in

0.9398 mm

#62

0.0380 in

0.9652 mm

#61

0.0390 in

0.9906 mm

1 mm

0.0394 in

1.0000 mm

#60

0.0400 in

1.0160 mm

#59

0.0410 in

1.0414 mm

#58

0.0420 in

1.0668 mm

#57

0.0430 in

1.0922 mm

1.1 mm

0.0433 in

1.1000 mm

#56

0.0465 in

1.1811 mm

3/64 in

0.0469 in

1.1906 mm

1.2 mm

0.0472 in

1.2000 mm

1.3 mm

0.0512 in

1.3000 mm

#55

0.0520 in

1.3208 mm

#54

0.0550 in

1.3970 mm

1.4 mm

0.0551 in

1.4000 mm

1.5 mm

0.0591 in

1.5000 mm

#53

0.0595 in

1.5113 mm

1/16 in

0.0625 in

1.5875 mm

1.6 mm

0.0630 in

1.6000 mm

#52

0.0635 in

1.6129 mm

1.7 mm

0.0669 in

1.7000 mm

#51

0.0670 in

1.7018 mm

#50

0.0700 in

1.7780 mm

1.8 mm

0.0709 in

1.8000 mm

#49

0.0730 in

1.8542 mm

1.9 mm

0.0748 in

1.9000 mm

#48

0.0760 in

1.9304 mm

5/64 in

0.0781 in

1.9844 mm

#47

0.0785 in

1.9939 mm

2 mm

0.0787 in

2.0000 mm

#46

0.0810 in

2.0574 mm

#45

0.0820 in

2.0828 mm

2.1 mm

0.0827 in

2.1000 mm

#44

0.0860 in

2.1844 mm

2.2 mm

0.0866 in

2.2000 mm

#43

0.0890 in

2.2606 mm

2.3 mm

0.0906 in

2.3000 mm

#42

0.0935 in

2.3749 mm

3/32 in

0.0938 in

2.3813 mm

2.4 mm

0.0945 in

2.4000 mm

#41

0.0960 in

2.4384 mm

#40

0.0980 in

2.4892 mm

2.5 mm

0.0984 in

2.5000 mm

#39

0.0995 in

2.5273 mm

#38

0.1015 in

2.5781 mm

2.6 mm

0.1024 in

2.6000 mm

#37

0.1040 in

2.6416 mm

2.7 mm

0.1063 in

2.7000 mm

#36

0.1065 in

2.7051 mm

7/64 in

0.1094 in

2.7781 mm

#35

0.1100 in

2.7940 mm

2.8 mm

0.1102 in

2.8000 mm

#34

0.1110 in

2.8194 mm

#33

0.1130 in

2.8702 mm

2.9 mm

0.1142 in

2.9000 mm

#32 

0.1160 in

2.9464 mm

3 mm

0.1181 in

3.0000 mm

3.1 mm

0.1221 in

3.1000 mm

1/8 in

0.1250 in

3.1750 mm

3.2 mm

0.1260 in

3.2000 mm

#30

0.1285 in

3.2639 mm

3.3 mm

0.1299 in

3.3000 mm

3.4 mm

0.1339 in

3.4000 mm

#29

0.1360 in

3.4544 mm

9/64 in

0.1406 in

3.5719 mm

5/32 in

0.1563 in

3.9688 mm

11/64 in

0.1719 in

4.3656 mm

3/16 in

0.1875 in

4.7625 mm

13/64 in

0.2031 in

5.1594 mm

7/32 in

0.2188 in

5.5563 mm

15/64 in

0.2344 in

5.9531 mm

1/4 in

0.2500 in

6.3500 mm

17/64 in

0.2656 in

6.7469 mm

9/32 in

0.2813 in

7.1438 mm

19/64 in

0.2969 in

7.5406 mm

5/16 in

0.3125 in

7.9375 mm

21/64 in

0.3281 in

8.3344 mm

11/32 in

0.3438 in

8.7313 mm

23/64 in

0.3594 in

9.1281 mm

3/8 in

0.3750 in

9.5250 mm

25/64 in

0.3906 in

9.9219 mm

13/32 in

0.4063 in

10.3188 mm

27/64 in

0.4219 in

10.7156 mm

7/16 in

0.4375 in

11.1125 mm

29/64 in

0.4531 in

11.5094 mm

15/32 in

0.4688 in

11.9063 mm

31/64 in

0.4844 in

12.3031 mm

1/2 in

0.5 in

12.700 mm

33/64 in

0.5156 in

13.0969 mm

17/32 in

0.5313 in

13.4938 mm

35/64 in

0.5469 in

13.8906 mm

9/16 in

0.5625 in

14.2875 mm

37/64 in

0.5781 in

14.6844 mm

19/32 in

0.5938 in

15.0813 mm

39/64 in

0.6094 in

15.4781 mm

5/8 in

0.6250 in

15.8750 mm

41/64 in

0.6406 in

16.2719 mm

43/64 in

0.6719 in

17.0656 mm

11/16 in

0.6875 in

17.4625 mm

45/64 in

0.7031 in

17.8594 mm

23/32 in

0.7188 in

18.2563 mm

47/64 in

0.7344 in

18.6531 mm

3/4 in

0.7500 in

19.0500 mm

49/64 in

0.7656 in

19.4469 mm

25/32 in

0.7813 in

19.8438 mm

51/64 in

0.7969 in

20.2406 mm

13/16 in

0.8125 in

20.6375 mm

53/64 in

0.8281 in

21.0344 mm

27/32 in

0.8438 in

21.4313 mm

55/64 in

0.8594 in

21.8281 mm

7/8 in

0.8750 in

22.2250 mm

57/64 in

0.8906 in

22.6219 mm

29/32 in

0.9063 in

23.0188 mm

21/23 in

0.9130 in

23.1913 mm

59/64 in

0.9219 in

23.4156 mm

15/16 in

0.9375 in

23.8125 mm

61/64 in

0.9531 in

24.2094 mm

31/32 in

0.9688 in

24.6063 mm

63/64 in

0.9844 in

25.0031 mm

1 in

1.0000 in

25.4000 mm

1 1/64 in

1.0156 in

25.7969 mm

1 1/32 in

1.0313 in

26.1938 mm

1 3/64 in

1.0469 in

26.5906 mm

1 1/16 in

1.0625 in

26.9875 mm

1 5/64 in

1.0781 in

27.3844 mm

1 3/32 in

1.0938 in

27.7813 mm

1 7/64 in

1.1094 in

28.1781 mm

1 1/8 in

1.1250 in

28.5750 mm

1 9/64 in

1.1406 in

28.9719 mm

1 5/32 in

1.1563 in

29.3688 mm

1 11/64 in

1.1719 in

29.7656 mm

1 3/16 in

1.1875 in

30.1625 mm

1 13/64 in

1.2031 in

30.5594 mm

1 7/32 in

1.2188 in

30.9563 mm

1 15/64 in

1.2344 in

31.3531 mm

1 1/4 in

1.2500 in

31.7500 mm

1 17/64 in

1.2656 in

32.1469 mm

1 9/32 in

1.2813 in

32.5438 mm

1 19/64 in

1.2969 in

32.9406 mm

1 5/16 in

1.3125 in

33.3375 mm

1 21/64 in

1.3281 in

33.7344 mm

1 11/32 in

1.3438 in

34.1313 mm

1 23/64 in

1.3594 in

34.5281 mm

1 3/8 in

1.3750 in

34.9250 mm

1 25/64 in

1.3906 in

35.3219 mm

1 13/32 in

1.4063 in

35.7188 mm

1 27/64 in

1.4219 in

36.1156 mm

1 7/16 in

1.4375 in

36.5125 mm

1 29/64 in

1.4531 in

36.9094 mm

1 15/32 in

1.4688 in

37.3063 mm

1 31/64 in

1.4844 in

37.7031 mm

1 1/2 in

1.5000 in

38.1000 mm