Materials

Stainless Steel

Stainless Steel is a widely used metal with a number of advantages, it is recognised for being both high strength and corrosion/ temperature resistance.

It’s high sheer strength favors its use in building and construction industry and its aesthetic appeal makes it a popular choice for outdoor sculptures. Stainless steel is available in a range of surface finishes and the fact that it can also be polished makes it aesthe­tic­ally eye-pleasing.

Stainless Steel can be 3dprinted, casted, melted, formed, machined and extruded, meaning that it can be manufactured into a variety of shapes and then subsequently fabricated to suit a whole variety of uses.

When selecting a material, consider the material properties, manufacturability characteristics, cosmetic appearance, surface finishes and cost.

Materials

Stainless Steel

Stainless Steel is a widely used metal with a number of advantages, it is recognised for being both high strength and corrosion/ temperature resistance.

It’s high sheer strength favors its use in building and construction industry and its aesthetic appeal makes it a popular choice for outdoor sculptures. Stainless steel is available in a range of surface finishes and the fact that it can also be polished makes it aesthe­tic­ally eye-pleasing.

Stainless Steel can be 3dprinted, casted, melted, formed, machined and extruded, meaning that it can be manufactured into a variety of shapes and then subsequently fabricated to suit a whole variety of uses.

When selecting a material, consider the material properties, manufacturability characteristics, cosmetic appearance, surface finishes and cost.

Select the Right Manufacturing Solution

stainless steel 316 CNC

Manufacturing Process:

 

Stainless Steel 316L

VMetal produces 316L stainless steel objects using fine metallic powder that is largely made of iron (66-70%) and enhanced with chrome (16-18%), nickel (11-14%), and molybdenum (2-3 percent ). The substance has a high degree of ductility and offers great corrosion resistance. It is a great candidate for implementation in a variety of industries thanks to these characteristics, including the medical field for surgical assistance, endoscopic surgery, or orthopedics; the aerospace industry for producing mechanical parts; and the automotive industry for corrosion-resistant parts.

Without any special finishing, the material seems grainy and coarse yet is suitable for the majority of uses. Through finishing processes, surfaces can be made shiny and smooth after printing. Machined, drilled, welded, electro-eroded, granulated, polished, and coated parts are all possible.

Stainless steel is the smoothest metal 3D printing material when compared to the other metals.

Tensile Strength (MPa) ≥560
Yield Strength (MPa) ≥480
Elongation at Break (%) ≥10%
Hardness (Brinell) ≥200
Density (g/cm³) 7.95

 

Stainless Steel 15-5PH (PH1)

VMetal offers 3D printing services using 15-5PH stainless steel. Comprising (14-15.5)% chromium and (3.5-5.5)% nickel, this material delivers exceptional corrosion resistance, commendable mechanical properties, and a high level of wear resistance. It is widely favoured in critical applications such as aerospace parts, medical devices, and various industries that demand strength and durability.

The primary advantage of 15-5PH stainless steel lies in its great ability to withstand corrosion even in harsh environments. This makes it a reliable choice for projects where exposure to challenging conditions is a concern. It is an excellent option for a wide range of applications.

Tensile Strength (MPa) ≥850
Yield Strength (MPa) ≥530
Elongation at Break (%) ≥10%
Hardness (Brinell) ≥360
Density (g/cm³) 7.7

 

Stainless Steel 17-4PH (GP1)

VMetal offers 3D printing services using 17-4PH stainless steel. With (16-17)% chromium and (4-5)% nickel composition, this material showcases outstanding corrosion resistance, mechanical properties, and wear resistance. It demonstrates remarkable durability even in extreme temperature conditions and offers superior machinability compared to other stainless steel grades.

The standout feature of 17-4PH stainless steel, setting it apart from 15-5PH stainless steel, is its remarkable strength and hardness, thanks to its high alloy content. This makes it an optimal choice for many applications, including shafts, gears, bolts, screws, springs, bushings, bearings, and more. When projects require robust strength and hardness, prioritizing these qualities over corrosion resistance, 17-4PH stainless steel proves to be an ideal material choice.

Tensile Strength (MPa) ≥850
Yield Strength (MPa) ≥530
Elongation at Break (%) ≥10%
Hardness (Brinell) ≥240
Density (g/cm³) 7.79

 

 

3D Printing Technical Specifications

Requirement Specification
Maximum build size 280 x 280 x 350 mm
Standard lead time 3-5 business days
Dimensional accuracy ± 0.1% with a lower limit on ± 0.1 mm
Layer height 100-300 μm

Available Surface Finishes

Standard:  Sand surfaces to remove build lines and bead blasted.

Anodized:  Electrochemical process that converts the metal surface into a decorative, durable, corrosion-resistant, anodic oxide finish

Heat Treated:  Use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material

Polished:  Sand surfaces to remove build lines and then apply polishing compound until desired surface finish is reached.

Metal Plated: Aluminum can be plated with a wide range of metals to increase its corrosion resistance, increase wear resistance, or improve overall aesthetics. Both electroplating and electroless plating are possible. Some common metals include tin, nickel, electroless nickel, gold, and silver.

Powder Coating: Powder coating is a robust option for coloring aluminum sheet metal parts while also adding a measure of corrosion resistance.

Additional post-processing: Includes CNC milling, lathing & EDM

 

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stainless steel CNC

Manufacturing Process:
CNC Machining

Chromium is present in the alloys of stainless steel, which distinguishes it from regular steel. At least 10.5% of the chemical ingredients in stainless steel are chromium. These steels are more corrosion resistant because of the chromium addition. The different grades of this material contain distinct alloying components that help to further improve the material’s machinability, heat treatability, and corrosion resistance. It should be mentioned that heat treatment can have a big impact on the mechanical properties of the metal.

Based on their crystalline makeup, stainless steels can be divided into different groups. Austenitic, ferritic, martensitic, and duplex are among these:

Stainless steel made of austenitic elements, such as the 300- and 200-series stainless steel, is very formable and does not work-harden. In an annealed form, they are also non-magnetic.
In comparison to austenitic stainless steel, ferritic stainless steels are magnetic and have better thermal conductivity. Heat treatment cannot harden them.
Various aging or heat treatment processes can be used to harden martensitic stainless steel, such as grade 416 and 420.
Duplex stainless steel is a type of stainless steel that is highly specialized for increased corrosion resistance. It is also known as austenitic-ferritic stainless steel. In industrial and architectural structural applications, duplex steels are common.

Every industry uses stainless steel in some capacity because of its versatility.

 

Stainless Steel 304

SUS304 material is one of the most commonly used stainless steels. It is widely used to make
equipment and parts that require good comprehensive performance (corrosion resistance and
formability). 304 stainless steel is a stainless steel produced in accordance with American ASTM
standards.

Stainless Steel 304 Properties
Tensile Strength, Yield (MPa) 215
Shear Modulus (GPa) 77
Elongation at Break (%) 70
Hardness (Brinell) 123
Density (g/cm³) 8

 

Stainless Steel 316

This austenitic grade of stainless steel contains molybdenum which gives it excellent corrosion resistance. In addition to this, it is highly formable and weldable. Applications include chemical tanks and boat fittings. The low carbon version, 316L, is more resistant to chlorides than the basic formulation.

Stainless Steel 316 Properties

 

Tensile Strength, Yield (MPa) 290
Shear Modulus (GPa) 74
Elongation at Break (%) 50
Hardness (Brinell) 217
Density (g/cm³) 8

 

stainless steel metal casting

Manufacturing Process:
Metal Casting

When both steel’s characteristics and corrosion resistance are required, stainless steel casting is taken into account. Consequently, stainless steel is a common material for the manufacturing of castings, just like other cast steel alloys.

 

Common Material Grades of Stainless Steel Casting

 

304 A2 stainless is the name of the most popular austenite steel.
304L Despite having slightly worse mechanical qualities to the typical 304 grade, this grade is nonetheless utilized extensively in casting due to its adaptability.
316 The second-most popular type of austenitic steel is also known as A4 stainless. The main reason SS316 is utilized is because of its improved corrosion resistance.
316L 316 stainless steel has a lower carbon content than 304 stainless steel, which lessens the sensitization effect brought on by welding at high temperatures. Additionally, it has improved resistance to stress-corrosion cracking.
PH17-4 The most popular martensitic stainless steel, which uses 4% nickel and 17% chromium, precipitation-hardens.
2205 Duplex Used for its superior corrosion resistance and outstanding mechanical qualities.

stainless steel sheet metal

Manufacturing Process:
Sheet Metal Fabrication

Due to their exceptional formability, ductility, and weldability, the 300 series alloys, also known as austenitic stainless steel, are the best kinds of stainless steel for sheet metal fabrication. These alloys have higher concentrations of chromium and nickel than ordinary steel, which increases their corrosion resistance significantly. They are suitable for applications involving food processing because they are also simple to clean.

 

Stainless Steel 301

This grade is a less expensive substitute for stainless steel grade 304. By raising its carbon content while lowering its chromium and nickel content, the savings are made possible. The disadvantage is that, as compared to other stainless steels for sheet metal manufacturing, this less expensive type has inferior corrosion resistance. It has many uses, including as enclosures for appliances or structural elements for trains.

Stainless Steel 301 Properties

Tensile Strength, Yield (MPa) 205
Fatigue Strength (MPa) 240
Elongation at Break (%) 40
Hardness (Brinell) 217
Density (g/cm³) 8.03

 

Stainless Steel 304

One of the most popular grades of stainless steel, it features an austenitic crystal structure. Although 304 and 18-8 stainless steel are frequently confused, some of their alloying constituents differ somewhat. It is perfect for sheet metal components because of its great formability and good properties for resisting corrosion. Tanks used in food processing and structural bracketing are examples of applications.

Stainless Steel 304 Properties

Tensile Strength, Yield (MPa) 215
Shear Modulus (GPa) 77
Elongation at Break (%) 70
Hardness (Brinell) 123
Density (g/cm³) 8

 

Stainless Steel 316

Molybdenum is added to this austenitic grade of stainless steel to increase its corrosion resistance. It is moreover very formable and weldable. Parts that are subject to corrosive environments, such as chemical tanks or naval equipment, are frequently used.

Stainless Steel 316 Properties

Tensile Strength, Yield (MPa) 290
Shear Modulus (GPa) 74
Elongation at Break (%) 50
Hardness (Brinell) 217
Density (g/cm³) 8

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