If you are involved in ダイカスト, product design, or industrial sourcing, you have likely encountered アルミニウム合金 383 (A383 / ADC12). But selecting the right material is not just about familiarity—it’s about パフォーマンス, 製造可能性, コスト効率.
アルミニウム 383 stands out as one of the most widely used die casting alloys そのため:
素晴らしい fluidity for complex geometries
強い 耐食性
信頼性のある 機械的性能
費用対効果が高い mass production capability
このガイドはaを提供します comprehensive, engineer-level breakdown to help you determine whether Aluminum 383 is the right material for your next project—and how to optimize its use.
What is Aluminum Alloy 383?
アルミニウム合金 383 is an Aluminum-Silicon-Copper (Al-Si-Cu) die casting alloy specifically developed to improve:
Casting performance
Dimensional stability
Resistance to hot cracking
Equivalent Standards
A383 (ASTM)
ADC12 (彼はそうです)
Typical Manufacturing Processes
CNC加工 (二次的な操作)
表面仕上げ (コーティング, メッキ)
👉 Compared to other alloys, 383 is particularly suitable for 複雑, thin-walled components where precision and repeatability are critical.
Chemical Composition of Aluminum Alloy 383
Composition Overview
| 要素 | Percentage | 関数 |
| アルミニウム (アル) | バランス | 軽量, 耐食性 |
| ケイ素 (そして) | 9.5–11.5% | Improves fluidity and wear resistance |
| 銅 (銅) | 2.0–3.0% | Increases strength and hardness |
| 鉄 (鉄) | ≤1.3% | Prevents die sticking |
| 亜鉛 (亜鉛) | ≤3.0% | Enhances machinability |
| マグネシウム (マグネシウム) | ≤0.1% | Minor strengthening |
| マンガン (ん) | ≤0.5% | Grain refinement |
| ニッケル (で) | ≤0.5% | 耐熱性 |
| その他 | ≤0.5% | Trace adjustments |
Why Composition Matters
Each element plays a strategic role:
High Silicon → Superior Castability
Enables thin walls and complex shapes with minimal defects.
Copper Addition → Mechanical Strength
Improves load-bearing capability for structural parts.
Controlled Iron Content → Mold Release
Prevents sticking during die casting, improving cycle time.
👉 This balance makes 383 に最適です 大量, precision die casting applications.
Key Properties of Aluminum Alloy 383
物理的特性
| 財産 | 価値 | Engineering Significance |
| 密度 | 2.74 g/cm3 | Lightweight design |
| 融点 | ~549°C | Efficient casting |
| 熱伝導率 | 96 W/m・K | Heat dissipation |
| 電気伝導性 | ~23% IACS | Moderate conductivity |
| 熱膨張 | 21.1 µm/m·°C | Dimensional stability |
👉 These properties make 383 に最適です thermal management applications, such as housings and heat sinks.
機械的性質
| 財産 | 価値 |
| 極限引張強さ | ~310 MPa |
| 降伏強さ | ~150 MPa |
| 伸長 | ~3.5% |
| 硬度 | ~75 HB |
| 疲労強度 | ~140 MPa |
| 弾性率 | ~71 GPa |
👉 Interpretation:
高強度 + moderate ductility
Performs well under cyclic loads and vibration
に適しています structural and semi-structural components
Advantages of Aluminum Alloy 383
Exceptional Castability
Flows easily into complex molds
Reduces porosity and shrinkage defects
コスト効率
Lower scrap rates
Reduced machining requirements
に最適です large production runs
Good Corrosion Resistance
Suitable for outdoor and industrial environments
優れた被削性
Enables tight tolerances in post-processing
高い強度重量比
Critical for automotive and electronics industries
Limitations of Aluminum Alloy 383
For informed decision-making, it’s essential to consider the downsides:
❌ Not suitable for welding (risk of cracking)
❌ Moderate ductility (not ideal for deformation-heavy applications)
❌ Porosity risk in die casting
❌ Lower strength than wrought alloys
👉 Best practice: 使用 383 のために cast components, not welded structures.
アルミニウム 383 vs Aluminum 380: 主な違い
| 特徴 | アルミニウム 383 | アルミニウム 380 |
| Fluidity | より高い | 適度 |
| Crack Resistance | より良い | より低い |
| 強さ | Slightly lower | より高い |
| 複雑 | Better for intricate parts | Less suitable |
When to Choose 383
複雑な形状
薄肉構造
Reduced casting defects required
When to Choose 380
Higher mechanical strength needed
Simpler designs
Manufacturing Considerations
Die Casting Performance
Excellent mold filling capability
Reduced cycle times
Lower defect rates
👉 Ideal for high-volume OEM production
Machining Characteristics
Good chip formation
Low tool wear
High precision achievable
表面仕上げオプション
パウダーコーティング (推奨)
電気めっき
絵画
⚠️ Anodizing is limited due to high silicon content.
Applications of Aluminum Alloy 383
自動車産業
トランスミッションハウジング
エンジンブラケット
構造コンポーネント
👉 Benefits: 軽量 + thermal performance
エレクトロニクス & 電気
ヒートシンク
エンクロージャー
Connector housings
👉 Critical for thermal management
家電製品
Motor housings
フレーム
Heat-resistant components
産業機械
パンプス
バルブ
ギアボックス
👉 Provides durability under heavy operation
消費者向け製品
Bicycle parts
Furniture hardware
電動工具
Is Aluminum Alloy 383 Right for Your Project?
Use this quick decision checklist:
✅ Choose Aluminum 383 もし:
あなたが必要です complex die-cast shapes
Your project requires high production volume
Heat dissipation is important
Cost optimization is critical
❌ Avoid if:
Welding is required
High ductility is needed
Extreme mechanical strength is the priority
結論
アルミニウム合金 383 remains one of the most practical and cost-effective die casting materials 現代の製造業では.
の組み合わせ:
優れたキャスティブ可能性
Reliable strength
優れた耐食性
Competitive cost
…makes it a top choice across automotive, エレクトロニクス, および産業部門.
よくある質問
1. What is Aluminum Alloy 383?
A die casting aluminum alloy known for excellent castability and balanced mechanical properties.
2. Is it the same as ADC12?
はい, アルミニウム 383 is equivalent to ADC12 in many applications.
3. Is Aluminum 383 耐食性?
はい, it offers good corrosion resistance for industrial and consumer use.
4. Can it be welded?
いいえ, welding is not recommended due to cracking risks.
5. Is Aluminum 383 リサイクル可能?
はい, it is fully recyclable and environmentally sustainable.
🚀 Ready to Start Your Project?
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