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4340 Alloy Steel Shims are made from a nickel-chromium-molybdenum alloy steel known for its exceptional strength, toughness, and fatigue resistance. These shims are widely used in critical engineering and aerospace applications where durability is paramount. 4340 Alloy Steel Shims maintain excellent mechanical properties even at high temperatures and under severe stress. They offer outstanding wear resistance and can be heat treated to achieve superior hardness levels. 4340 Alloy Steel Shims provide a perfect combination of strength and reliability for precision engineering tasks.
The 4340 Alloy Steel Shims exhibit excellent hardenability and can achieve high tensile and yield strength through heat treatment. Their unique composition allows for deep hardening, resulting in uniform mechanical properties throughout the material. 4340 Alloy Steel Shims perform efficiently in high-load and high-torque applications such as aircraft landing gear, drive shafts, and crankshafts. Their ability to resist fatigue and impact makes them ideal for long-term industrial use. 4340 Alloy Steel Shims deliver consistent performance under extreme operating conditions.
4340 Alloy Steel Shims possess superior ductility and toughness compared to many other alloy steels, allowing them to absorb shock and vibration effectively. They maintain dimensional stability under fluctuating mechanical loads and temperatures. 4340 Alloy Steel Shims are used in industries such as aerospace, defense, power generation, and oil & gas. Their nickel content enhances toughness, while chromium and molybdenum improve strength and wear resistance. 4340 Alloy Steel Shims ensure high performance and reliability in demanding environments.
The 4340 Alloy Steel Shims are easily machinable in the annealed condition and respond well to various heat-treatment processes. They can be quenched and tempered to achieve a precise balance of hardness and toughness. 4340 Alloy Steel Shims are suitable for use in heavy machinery, tooling, and structural assemblies requiring precision alignment. Their ability to withstand repeated mechanical stress without deformation ensures long-lasting accuracy. 4340 Alloy Steel Shims offer exceptional fatigue resistance, even in dynamic applications.
4340 Alloy Steel Shims demonstrate excellent toughness at both room and subzero temperatures, making them suitable for high-stress and low-temperature applications. They exhibit strong resistance to wear, bending, and cracking, providing extended service life. 4340 Alloy Steel Shims are often used in demanding components such as landing gear parts, gears, and connecting rods. Their exceptional mechanical performance ensures stability and reliability under high load conditions. 4340 Alloy Steel Shims maintain consistent strength and structure even after prolonged use.
The manufacturing of 4340 Alloy Steel Shims follows international standards such as ASTM A29 and SAE 4340 specifications. These shims can be supplied in normalized, quenched, tempered, or annealed conditions, depending on the application requirements. 4340 Alloy Steel Shims are available in multiple sizes, thicknesses, and finishes for different industrial purposes. Their excellent metallurgical structure ensures long-term stability and precision fitting. 4340 Alloy Steel Shims are widely trusted for engineering assemblies that demand accuracy and high performance.
In conclusion, 4340 Alloy Steel Shims combine superior mechanical strength, toughness, and wear resistance to deliver exceptional reliability in critical environments. They are ideal for aerospace, automotive, and mechanical engineering applications requiring maximum durability. 4340 Alloy Steel Shims provide accurate alignment, stable support, and long-lasting performance. Their ability to resist fatigue and distortion under stress makes them an essential material for precision components. Choosing 4340 Alloy Steel Shims ensures strength, endurance, and engineering excellence in every application.
Specification Table
| Property | Specification |
|---|---|
| Material Type | 4340 Alloy Steel |
| Form | Shims / Sheets / Plates |
| Thickness Range | 0.1 mm – 10 mm (customizable) |
| Width Range | 10 mm – 200 mm |
| Length Range | 100 mm – 1000 mm |
| Surface Finish | Polished / Cold Rolled |
| Hardness | 280 – 330 HB |
| Tensile Strength | 930 – 1080 MPa |
| Yield Strength | 745 MPa (approx.) |
| Elongation | 20% (approx.) |
| Applications | Automotive, Aerospace, Heavy Machinery, Industrial Equipment |
Chemical Composition (Typical ranges for SSGrade)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.38 – 0.43 |
| Manganese (Mn) | 0.60 – 0.80 |
| Silicon (Si) | 0.15 – 0.35 |
| Chromium (Cr) | 0.70 – 0.90 |
| Molybdenum (Mo) | 0.20 – 0.30 |
| Nickel (Ni) | 1.65 – 2.00 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Tensile Strength | 930 – 1080 MPa |
| Yield Strength | 745 MPa (approx.) |
| Elongation | 20% (approx.) |
| Hardness | 280 – 330 HB |
| Impact Toughness | ≥ 50 J at room temperature |
| Modulus of Elasticity | 205 GPa |
| Fatigue Strength | 550 MPa (approx.) |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| AISI / SAE | 4340 |
| ASTM | ASTM A322 / A29 |
| DIN | 42CrMo4 |
| EN | 1.6511 / 34CrMo4 |
| JIS | SCM440 |
| GB (China) | 40CrNiMoA |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Thickness (mm) | Width (mm) | Length (mm) | Weight per Sheet (kg) |
|---|---|---|---|
| 0.5 | 100 | 200 | 0.78 |
| 1.0 | 100 | 200 | 1.56 |
| 2.0 | 100 | 200 | 3.12 |
| 5.0 | 200 | 400 | 31.2 |
| 10.0 | 200 | 400 | 62.4 |
Types Of 4140 Alloy Steel Shimss and Tubes
Stainless Steel Shims
Monel 400 Steel Shims
Hastelloy Shims
Nickel Shims
Super Duplex Shims
Duplex Shims
Inconel 600 Shims
Monel K500 Shims
Frequently Asked Questions (FAQ)
What is 4340 Alloy Steel?
4340 Alloy Steel is a high-strength, low-alloy steel with excellent toughness, fatigue resistance, and hardenability, commonly used in aerospace, automotive, and industrial applications.
What are the typical applications of 4340 Alloy Steel Shims?
They are used in precision machinery, automotive components, aerospace assemblies, heavy-duty equipment, and any application requiring durable, high-strength shims for alignment or spacing.
What are the available thicknesses of 4340 Alloy Steel Shims?
Thickness ranges from 0.1 mm to 10 mm, and custom thicknesses can be manufactured based on requirements.
Can 4340 Alloy Steel Shims be customized?
Yes, they can be customized in terms of thickness, width, length, and surface finish to meet specific engineering needs.
What is the surface finish of 4340 Alloy Steel Shims?
The surface finish can be polished or cold-rolled, depending on the application requirements.
Alloy Steel Shims Supplier
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Alloy Steel Shims Exporter
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