What Details Should Be Considered in the Design of Steel Parts?
Sep 10, 2025
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Material Selection
Consider the application scenario: The design of steel parts should select the appropriate type of steel based on factors such as the part's operating environment, stress conditions, and working temperature. For example, high-strength alloy steel can be chosen for high-strength applications; stainless steel can be selected for corrosive environments, etc.
Performance requirements: Understand the mechanical properties of the steel, such as strength, hardness, toughness, and fatigue strength, to ensure the selected material meets the functional needs of the part. Simultaneously, consider the material's processability, such as weldability and machinability, to facilitate subsequent manufacturing and processing.
Dimensional Design
Reasonable dimensional tolerances: Determine the dimensional tolerance range for the part, ensuring both assembly accuracy and considering the feasibility and cost of machining. Excessively tight tolerance requirements may increase machining difficulty and cost, while overly loose tolerances may affect the part's performance and service life.
Avoid sharp corners and edges: When designing parts, avoid the presence of sharp corners and edges as much as possible, because these areas are prone to stress concentration, reducing the part's strength and fatigue life. Rounded transitions or chamfers can be used to reduce stress concentration.
Consider thermal expansion and contraction: Steel expands and contracts with temperature changes, so the impact of temperature variations on dimensions must be considered during part design. For some high-precision parts, compensatory measures can be adopted, such as allowing for expansion gaps or using materials with smaller coefficients of thermal expansion.
Structural Design
Uniform stress distribution: When designing the part's structure, strive to make the stress distribution even and avoid situations where local stress is excessive. This can be achieved through reasonable shape design, the addition of stiffeners, and other methods.
Facilitate processing and assembly: Consider the machining processes and assembly methods, designing structures that are easy to machine and assemble. For example, design reasonable hole positions, threads, etc., and avoid complex shapes that are difficult to machine.
Consider welded structures: If the part requires welding, suitable weld joint types should be designed to ensure welding quality. Simultaneously, consider the issue of deformation after welding and take corresponding preventive measures.
Prevent corrosion: For parts used in corrosive environments, corresponding anti-corrosion measures should be taken, such as selecting corrosion-resistant materials or applying surface treatments. When designing the structure, also avoid areas prone to water or dust accumulation to reduce the occurrence of corrosion.
Detail Handling
Surface quality: Determine the appropriate surface roughness based on the part's usage requirements. Surface roughness not only affects the part's appearance but also its friction performance, corrosion resistance, etc. For some high-precision parts, surface treatments like polishing or grinding are also necessary to improve surface quality.
Identification and marking: Design identifiers and markings on the part to facilitate identification, tracing, and management. Identification and marking can be done through engraving, labels, etc., and should be clear, durable, and resistant to wear.
Safety factors: Consider safety factors during the part's use, such as avoiding sharp edges or protruding parts to prevent injury to personnel. For some critical parts, safety devices can be installed, such as safety pins or protective covers.
Titanium product forms available from GNEE
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Item Name |
china wholesale stock astm b337 b338 gr1 gr2 gr9 titanium pipe titanium tubes seamless |
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Material |
pure titanium and titanium alloy |
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Standard |
ASTM B337, ASTM B338. ASTM B861, ASTM B862 |
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Brand |
China Grades: TA1, TA2, TC4 (Gr5 Equivalent), TA9 (Gr7 Equivalent), TA10 (Gr9 Equivalent), TA18 |
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Shape |
Round Titanium Tube/Pipe, Square Titanium Tube/Pipe, Rectangular Titanium Tube/Pipe, Titanium Coil Tube |
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Type |
Seamless & Welded (ASTM B337/B338 for Industrial & Heat Exchanger Applications) |
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Product name |
Pure Titanium bar/Pure Titanium rod/Titanium alloy bar/Tianium alloy rod |
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Standard |
GB/T 2965-2007 GB/T 13810-2007, ASTM B348,ASTM F67,ASTM F136, AMS4928,MIL4911 |
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Titanium type |
Commercially Pure(CP) / Titanium alloy |
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Grade |
TA1 TA2 TA3 TA4 TA5 TA6 TA7 TA8 TA9 TA10 TA11 TA12 TA13 TA14 |
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Diameter |
3-350mm |
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Length |
Max6000mm |
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Technique |
Forging, machining |
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Surface |
Acid surface or polishing, sand blasted surface |
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Shape |
Round, flat, square, hexagonal |
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Application |
Metallurgy, electronics, medical, chemical, petroleum, pharmaceutical, aerospace, etc. |
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Production Name |
Titanium plate/Titanium sheet |
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Grade |
Gr1, Gr2, Gr3,Gr4,Gr5, Gr7, Gr6,Gr9, Gr11, Gr12 ,Gr16, Gr17,Gr25 |
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Size |
All sizes can be customized |
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Application |
Metallurgy, electronics, machinery, medical treatment, chemical industry, petroleum, medical treatment, aerospace |
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Feature |
High corrosion resistance, low density, good thermal stability |
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Technology |
Hot Forged, Hot Rolled, Cold Rolled, Annealing, Pickling |
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Surface |
Bright, Polished, Pickling, Acid cleaning, Sandblasting |
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Packing |
Export Standard Woodcase |
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Delivery time |
10-25days according to the quantity and process of the product |
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Quality and test |
Hardness test, Bending test, Hydrostatic etc. |
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Product name |
Titanium wire |
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Grade |
GR1,GR2,GR3,GR4,GR5,GR7,GR9,GR11,GR12,GR23 etc.
ERTi-1, ERTi-2, ERTi-3, ERTi-4, ERTi-5, ERTi-7, ERTi-9, ERTi-11, ERTi-12 |
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Size |
Dia：0.1-8mm or customizable |
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Standard |
ASTM B348,ASME SB348,ASTM B863,AWS.A5.16,GB/T3623-2007 |
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MOQ |
10kg |
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Quality and test |
Annealing, Ultrasonic testing |
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Application |
Aerospace, Chemical, Medical, Eye Frames,Welding etc |
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Feature |
High strength,Light weight,Excellent heat conduction and corrosion resistance |
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Condition |
Annealed (M), Hot Worked (R), Cold Worked (Y) |
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Surface |
Bright, Polished, Pickling, Sandblasting |
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Package |
Wooden Box |
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Product Name
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Custom Precision CNC Machining Services
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Material
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Metal: Aluminum, Stainless Steel, Copper, Iron, Titanium Alloy, Zinc Alloy, Magnesium Alloy.
Plastic: Nylon, ABS, POM, PC, PP, PE, PETG, PEEK, PMMA, PVC, UHMW.
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Surface treatment
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Anodizing, Polishing, Electroplating, Powder Coating, Sandblasting, Magnetic Polishing, Spray Painting, Drawing, Embossing, Electrophoresis, Screen Printing, Laser Engraving.
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Process
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3-Axis/4-Axis/5-Axis/6-Axis CNC Milling, CNC Turning
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Application
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Mechanical Spare Parts, Aerospace Components, Automotive Parts, Maintenance Parts
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Maximal Part Size
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3000 mm (118 in)
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Minimal Part Size
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2 mm (0.08 in)
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Drawing format
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DWG, DXF, PDF, SOLIDWORKS, PRT, STP, STEP, IGS, etc.
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Certification
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ISO 9001:2015
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GNEE is a specialized manufacturer and exporter of high-quality titanium products, including pipes, sheets, bars, wires, and fabricated parts.
We utilize advanced CNC machining, rolling, and welding equipment to ensure precision manufacturing. All products undergo strict chemical, mechanical, and non-destructive testing to guarantee compliance with international standards.
Our export-safe packaging includes wooden crates and waterproof wrapping to ensure secure delivery. If you have any needs, please feel free to contact us immediately：info@gneemetal.com
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