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Material Options

At BRK Metal, we always start with the functionality of the product. Once functionality is established, the product can be further developed. An important part of this is the choice of material. Good design is entirely dependent on the right material selection. Knowing the properties that steel must possess is important. For example, we can consider these properties:

  • Mechanical properties (hardness, tensile strength, elongation, and elasticity)
  • Thermal properties (heat resistance)
  • Chemical properties (acid resistance and corrosion resistance)

The metallurgical engineers at BRK Metal will be pleased to help you select the most suitable alloy for your application. They will also assist you in choosing the right chemical composition, structure, hardness, tensile strength, or heat resistance.

Structural steels are a type of steel used in construction and engineering projects. These steels are designed for creating load-bearing structures and constructions. Structural steels are known for their durability, strength, and suitability for various industrial applications. Here is more information about structural steels and an example material table:

Structural Steels

  1. Structural Purpose Steels: These types of steels are used to form the load-bearing elements of a building or structure. They are commonly referred to as construction steels and are produced in accordance with common standards like ASTM A36.
  2. Low Alloy Steels: These types of steels contain small amounts of alloying elements to enhance strength. For example, ASTM A572 is a standard for high-strength low-alloy structural steel.
  3. High Strength Steels: These types of steels are especially used in large structures and heavy construction projects. For instance, high-strength structural steels like ASTM A514 can be mentioned.
  4. Cold-Formed Steels: These steels are commonly used for structural elements and frames. They are particularly formed into profiled sheet materials by cold forming.
  5. Stainless Steels: Stainless steels are often preferred in structures used in special conditions such as industrial kitchens, chemical plants, and marine applications.

The most preferred structural steels:

Material TypeStrength (MPa)Yield Strength (MPa)Elastic Modulus (GPa)Density (kg/m³)
ASTM A36 (Structural Steel)400-5502502007850
ASTM A572 (Low Alloy Steel)450-6803452007850
ASTM A514 (High-Strength Steel)690-7606202107850
SS 304 (Stainless Steel)5152051937900

Tool Steels

Tool Steels are a special type of steel characterized by high hardness, toughness, and wear resistance. They are typically used for cutting tools, dies, and other tools for cutting, drilling, shaping, and other machining processes. Tool steels are known for their ability to withstand high temperatures and pressures and are used in various industrial applications.

Tool steels include many varieties with different properties and compositions and come in different classifications according to their intended use. These are customized for different applications such as cold work, hot work, plastic mold making, high-speed steels, etc.

The most preferred tool steels:

Malzeme TürüKarbon İçeriğiSertlik (Rockwell C)ToklukAşınma DirenciYüksek Sıcaklık Tokluğu
D2 (Soğuk İşleme Takım Çeliği)%1.40-1.6058-62OrtaYüksekOrta
H13 (Sıcak İşleme Takım Çeliği)%0.32-0.4548-52OrtaYüksekYüksek
P20 (Plastik Kalıp Çeliği)%0.28-0.4028-32YüksekOrtaOrta
M2 (Yüksek Hızlı Çelik)%0.80-0.9063-68OrtaYüksekYüksek

Stainless Steels

Stainless steels are a special type of steel known for their resistance to corrosion. They typically do not oxidize or rust even when in contact with water, humidity, acids, and other environmental factors. Due to these properties, stainless steels are ideal materials for many industries and applications. Stainless steels can include various types and grades, each with different chemical compositions, mechanical properties, and applications.

The fundamental properties of stainless steels include:

  1. Corrosion Resistance: Stainless steels remain durable even under conditions where most other metals corrode.
  2. High-Temperature Resistance: Some stainless steels retain their mechanical properties even at high temperatures, making them suitable for applications requiring temperature resistance.
  3. Aesthetic Appeal: Stainless steels offer a modern and stylish appearance, making them popular for construction, kitchen equipment, and decoration.
  4. Low Maintenance: Stainless steels require low maintenance due to their resistance to rust and ease of cleaning.
  5. Food Safety: Stainless steels are considered a safe material for food processing and kitchen equipment.

The most preferred stainless steels:

Material Type

Chemical Composition

Strength (MPa)

Yield Strength (MPa)

Hardness (Rockwell)

Corrosion Resistance

304 Stainless Steel

Cr: 18-20%, Ni: 8-10%515-690205HRB 85-96


316 Stainless Steel

Cr: 16-18%, Ni: 10-14%, Mo: 2-3%515-690205HRB 85-95


430 Stainless Steel

Cr: 16-18%450-600205HRB 76-89


410 Stainless Steel

Cr: 11.5-13.5%450-600205HRB 89-96


Heat Resistant Steels

Heat resistant steels are a special type of steel that exhibit durability in high temperature applications. These steels are commonly used in industrial furnaces, heating elements, power generation plants, the automotive sector, and other high-temperature applications due to their ability to maintain durability at high temperatures. Heat resistant steels are known for their ability to offer mechanical strength and oxidation resistance within a certain temperature range.

The fundamental properties of heat resistant steels include:

  1. High-Temperature Durability: These steels typically maintain their mechanical properties even at high temperatures.
  2. Oxidation Resistance: Heat resistant steels are resistant to oxidation at high temperatures and do not develop rust or corrosion on their surfaces.
  3. Thermal Expansion: The thermal expansion rates of these steels behave predictably even when exposed to high temperatures.
  4. High Strength: Heat resistant steels possess high strength under high temperature conditions.
  5. Ease of Use: Heat resistant steels are easy to process and shape, thereby meeting a variety of design and manufacturing needs.

The most preferred heat resistant steels:

Material Type

Chemical Composition

Maximum Operating Temperature

Yield Strength (MPa)

Hardness (Rockwell)

Thermal Expansion Coefficient

Inconel 600Ni: 72%, Cr: 15.5%, Fe: 8%, Cu: 0.2%1093 °C (2000 °F)241HRB 8813.1 x 10^-6/°C

310S Stainless Steel

Cr: 25%, Ni: 20%1150 °C (2102 °F)205HRB 9515.9 x 10^-6/°C

253MA Stainless Steel

Cr: 21%, Ni: 11%1150 °C (2102 °F)230HRB 8515.3 x 10^-6/°C

HK-40 Cast Steel

Cr: 20%, Ni: 40%980 °C (1800 °F)160HRB 7515.7 x 10^-6/°C

Aluminum Alloys

Aluminum investment casting alloys are widely used in the production of complex and precise parts, leveraging the advantages of investment casting. Aluminum investment casting alloys offer good strength, lightness, high precision, and aesthetic quality. Moreover, these alloys are resistant to corrosion and have excellent surface quality.Here are some common aluminum investment casting alloys and their properties:
  1. AlSi10Mg (Aluminum Silicon Magnesium): This alloy offers excellent fluidity properties, low density, and good strength. It is also resistant to high temperatures and is commonly used in automotive parts and the aviation industry.
  2. AlSi9Cu3 (Aluminum Silicon Copper): This alloy is known for its high strength and good heat conductivity. It is typically used for parts of electrical motors, machinery, and devices.
  3. AlSi7Mg (Aluminum Silicon Magnesium): This alloy has good mechanical properties and high-temperature resistance. It is commonly used in the aerospace and defense industries.
  4. AlSi12 (Aluminum Silicon): This alloy offers good casting properties and excellent corrosion resistance. It finds wide application in the automotive industry.
  5. AlSi9Mg (Aluminum Silicon Magnesium): This alloy provides high strength, low weight, and good thermal conductivity. It is often used for electrical and electronic devices.
The most preferred aluminum alloys:
Alaşım AdıKimyasal BileşimYoğunluk (g/cm³)Akma Mukavemeti (MPa)Sertlik (Brinell)Isıl İşlemKullanım Alanı
AlSi10MgAl: 89.7%, Si: 9.5%, Mg: 0.5%2.6824075T6Otomotiv, Havacılık
AlSi9Cu3Al: 88.6%, Si: 9.0%, Cu: 2.4%2.7026080T6Elektrikli Motorlar, Makineler
AlSi7MgAl: 90.7%, Si: 6.8%, Mg: 2.5%2.7130085T6Havacılık, Savunma
AlSi12Al: 88.7%, Si: 11.3%2.6822070T6Otomotiv
AlSi9MgAl: 90.7%, Si: 8.7%, Mg: 0.6%2.6826075T6Elektrik ve Elektronik Cihazlar

Bronze Alloys

Bronze is obtained by mixing copper with various alloys, typically tin, zinc, nickel, and other metals. Bronze investment casting alloys are ideal, especially for the production of intricate and complex parts. These alloys offer excellent castability, surface quality, and strength properties.Here are some features of bronze investment casting alloys:
  1. Good Castability: Bronze alloys exhibit excellent castability in precision casting processes and can successfully capture fine details.
  2. High Strength: Bronze alloys are known for their high-strength properties, providing sufficient durability for various applications.
  3. Corrosion Resistance: Bronze is resistant to corrosion and does not oxidize when exposed to water, moisture, and other environmental factors.
  4. Excellent Surface Quality: Bronze investment casting parts have a smooth and aesthetically pleasing surface, making them widely used in decorative and precision applications.
  5. Aesthetic Appeal: Bronze alloys offer a stylish and aesthetic appearance, making them a preferred choice in areas such as decoration, art, and jewelry.
Most preferred bronze investment casting alloys:
Alloy TypeChemical CompositionDensity (g/cm³)Yield Strength (MPa)Hardness (Brinell)Corrosion ResistanceApplications

Cu: 85.0%, Pb: 5.0%, Sn: 5.0%


Machine Parts, Door Handles


Cu: 86.0%, Al: 9.0%, Fe: 3.5%


Bearings, Mechanical Parts


Cu: 89.0%, Sn: 8.0%, Pb: 2.0%


Valve Parts, Maritime Applications


Cu: 83.0%, Pb: 7.0%, Sn: 7.0%


Bearing Rings, Machine Parts

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Why BRK Metal?

BRK Metal, conducting 60% of its production abroad, is an approved supplier for many well-known companies in Europe. With its young and talented team, BRK Metal, focusing on customer needs, has proven to be a reliable supplier by producing at affordable costs without compromising on quality, ensuring timely and seamless deliveries to its customers.

By adhering to the ISO 9001:2015 production principle, it has gained the satisfaction of many customers and has attracted more attention than companies unfamiliar with and not using the casting (investment casting) method, thanks to its investments in technological infrastructure.