If you’re using 3D printing for aluminum alloy parts—whether for aerospace components, industrial fixtures, or custom accessories—understanding the cost per gram is critical for budgeting. Unlike resin or PLA 3D printing, 3D printed aluminum alloys balance strength and lightweight properties but come with higher costs, variando de 70 RMB/gram for mass-produced parts para 450 RMB/gram for small-batch, high-precision components. This guide breaks down core cost drivers, provides practical price references, shares cost-saving tips, and answers common questions to help you make informed decisions.
1. 4 Core Factors That Impact the Cost of 3D Printed Aluminum Alloys Per Gram
The cost per gram of 3D printed aluminum alloys is shaped by tangible factors—from the printing technology used to post-processing complexity. Abaixo está uma análise detalhada com números reais para ilustrar seu impacto:
(1) 3D Printing Technology Type
A tecnologia é o principal direcionador de custos, como diferentes métodos variam em precisão, velocidade, e investimento em equipamentos. As três tecnologias mais comuns para impressão 3D em liga de alumínio são:
| Tipo de tecnologia | Custo por grama (RMB/grama) | Principais características | Aplicações típicas |
| Fusão seletiva a laser (Slm) | 150 ~ 450 | Precisão ultra alta (tolerância ± 0,02 mm), ideal para complexos, peças de pequenos lotes; altos custos de equipamentos e materiais | Componentes aeroespaciais (Por exemplo, Suportes de motor), implantes médicos |
| Fusão de feixe de elétrons (EBM) | 80 ~ 250 | Adequado para peças industriais de grande escala; custo mais baixo do que SLM, mas precisão ligeiramente reduzida (tolerância ± 0,05 mm) | Instalações industriais (Por exemplo, montagens de drones), Peças estruturais automotivas |
| Jateamento de ligação | 70 ~ 230 | Lowest unit cost for mass production; requer pós-processamento (debinding, sinterização) but efficient for bulk orders | Mass-produced small parts (Por exemplo, custom fasteners, decorative accessories) |
Exemplo: A 30g aluminum alloy part printed via SLM costs 4,500 ~ 13,500 RMB. The same part printed via Binding Jetting costs 2,100 ~ 6,900 RMB—50% cheaper—though it needs additional post-processing steps.
(2) Aluminum Alloy Grade
The grade of aluminum alloy directly affects material costs, as specialized grades (Por exemplo, grau aeroespacial, alta resistência) require refined raw materials and production processes:
| Aluminum Alloy Grade | Custo por grama (Material Only, RMB/grama) | Propriedades -chave | Aplicações típicas |
| AL6061 (Industrial Grade) | 20 ~ 80 | Boa máquinabilidade, força moderada; econômico | Suportes industriais, non-critical structural parts |
| ALSI10MG (Aerospace Grade) | 50 ~ 150 | Alta proporção de força / peso, resistente ao calor; meets aerospace standards | Componentes de aeronaves, high-performance drone parts |
Nota -chave: Imported aluminum alloy powders (Por exemplo, from EOS, Adaro) custo 2 ~ 3x more than domestic powders (Por exemplo, from Chinese suppliers). Por exemplo, imported AlSi10Mg powder costs 100 ~ 150 RMB/grama, while domestic AlSi10Mg powder costs 50 ~ 80 RMB/grama.
(3) Requisitos de pós-processamento
Nearly all 3D printed aluminum alloy parts need post-processing to meet strength, precisão, and appearance standards. Each step adds significantly to the total cost per gram:
| Etapa de pós-processamento | Custo por grama (RMB/grama) | Propósito |
| Basic Polishing/Sanding | 10 ~ 50 | Remove surface roughness (Ra from 3.2μm to 1.6μm); eliminate layer lines |
| High-Precision CNC Trimming | 50 ~ 200 | Alcançar tolerâncias apertadas (± 0,01 mm); refine critical features (Por exemplo, furos roscados, superfícies de acasalamento) |
| Electroplating/Coating | 30 ~ 150 | Enhance corrosion resistance (Por exemplo, Anodizando) or add aesthetic finish (Por exemplo, matte silver) |
| Tratamento térmico | 20 ~ 80 | Improve strength (Por exemplo, T6 heat treatment for Al6061); reduce internal stress |
Exemplo: A 50g part needing basic sanding costs 500 ~ 2,500 RMB in post-processing. The same part needing CNC trimming + anodizing costs 4,000 ~ 11,500 RMB—8x more.
(4) Volume do pedido
Order volume drastically impacts cost, como custos fixos (equipment setup, programação) estão espalhados por mais partes. Small batches are far more expensive than large-scale production:
| Volume do pedido | Custo por grama (Total, RMB/grama) | Discount vs. Single Piece | Exemplo: 50g AlSi10Mg Part (Tecnologia SLM) |
| Single Piece/Small Batch (<10 pedaços) | 250 ~ 450 | 0% (No Discount) | 50g × 350 RMB/gram = 17,500 RMB |
| Medium Batch (10 ~ 100 pedaços) | 150 ~ 250 | 20 ~ 40% | 50g × 200 RMB/gram = 10,000 RMB |
| Lote grande (>100 pedaços) | 70 ~ 150 | 40 ~ 70% | 50g × 100 RMB/gram = 5,000 RMB |
Exemplo: A single 50g aerospace bracket (Slm, ALSI10MG) custos 17,500 RMB. Pedindo 100 of the same brackets drops the cost to 5,000 RMB each—71% cheaper.
2. Typical Cost Per Gram: Scenario-Based Breakdown
To see how all these factors align, below are three common scenarios for 3D printed aluminum alloy parts:
| Cenário | Tecnologia | Aluminum Alloy Grade | Pós-processamento | Custo por grama (RMB/grama) | Exemplo (10g Part Total Cost) |
| Small-Batch High-Precision Part | Slm | ALSI10MG | CNC Trimming + Tratamento térmico | 250 ~ 450 | 2,500 ~ 4,500 RMB |
| Medium-Batch Industrial Part | EBM | AL6061 | Basic Polishing + Anodizando | 100 ~ 200 | 1,000 ~ 2,000 RMB |
| Large-Batch Mass-Produced Part | Jateamento de ligação | AL6061 | Lixar + Deburrendo | 70 ~ 150 | 700 ~ 1,500 RMB |
3. Practical Cost Reference for Common 3D Printed Aluminum Alloy Parts
To quickly gauge reasonable prices, below is a table of common part types and their typical costs:
| Tipo de peça | Size/Weight | Tecnologia | Custo por grama (RMB/grama) | Total Part Cost (RMB) |
| Custom Decorative Keychain | 2cm / 10g | Jateamento de ligação | 70 ~ 120 | 700 ~ 1,200 |
| Industrial Drone Mount | 10cm / 50g | EBM | 100 ~ 180 | 5,000 ~ 9,000 |
| Suporte de motor aeroespacial | 8cm / 40g | Slm | 250 ~ 400 | 10,000 ~ 16,000 |
| Mass-Produced Fasteners | 1cm / 5g | Jateamento de ligação | 70 ~ 100 | 350 ~ 500 |
4. 4 Practical Tips to Reduce the Cost of 3D Printed Aluminum Alloys Per Gram
While 3D printed aluminum alloys are more costly than basic plastics, these strategies can lower expenses without sacrificing quality:
(1) Optimize Part Design to Cut Material Use
- Simplify geometry: Remove redundant features (Por exemplo, unnecessary curves, oversize walls) to reduce part weight by 15 ~ 30%. Por exemplo, a 50g bracket optimized to 35g saves 15g of material—cutting costs by 30%.
- Use hollow structures: For non-load-bearing parts (Por exemplo, decorative keychains), design thin-walled (≥1mm) hollow interiors to reduce material consumption by 20 ~ 40%.
(2) Choose Domestic Aluminum Alloy Powders
Domestic powders (Por exemplo, from Chinese manufacturers) são 50 ~ 60% cheaper than imported alternatives and meet most industrial standards. Por exemplo, using domestic AlSi10Mg powder (50 ~ 80 RMB/grama) instead of imported (100 ~ 150 RMB/grama) cuts material costs by half.
(3) Batch Orders to Unlock Discounts
Even small increases in order volume yield significant savings. Se você precisar 50 parts over 6 meses, order all 50 at once instead of 10 per month—this unlocks a 20 ~ 40% desconto, reducing the cost per gram by 20 ~ 30%.
(4) Simplify Post-Processing When Possible
- Skip unnecessary steps: For non-precision parts (Por exemplo, decorative keychains), avoid CNC trimming and use basic sanding instead—saving 50 ~ 200 RMB/grama.
- Combine post-processing: Handle heat treatment and anodizing at the same facility to avoid shipping costs, reducing overall fees by 10 ~ 15%.
Yigu Technology’s Perspective on 3D Printed Aluminum Alloy Costs
Na tecnologia Yigu, acreditamos matching technology and alloy grade to project needs is key to cost-effective 3D printed aluminum alloys. Many clients overspend by using SLM for mass-produced parts or imported powders for non-critical components—for example, using SLM (300 RMB/grama) for a simple bracket that works with Binding Jetting (100 RMB/grama). Our team recommends SLM with domestic AlSi10Mg for small-batch aerospace parts and Binding Jetting with Al6061 for mass-produced industrial components. We also optimize designs to reduce material use by 15 ~ 30% and negotiate bulk powder discounts. Our goal is to deliver high-quality 3D printed aluminum alloy parts at the lowest possible cost per gram.
Perguntas frequentes
- Why is 3D printed aluminum alloy more expensive than 3D printed plastic?
3D printed aluminum alloy requires high-cost equipment (SLM/EBM machines cost 1 ~ 10 million RMB vs. 10 ~ 30,000 RMB for resin printers) and specialized metal powders (20 ~ 150 RMB/gram vs. 0.02 ~ 0.2 RMB/gram for resin). Pós-processamento (Por exemplo, CNC trimming, tratamento térmico) is also more complex and costly for metal parts.
- Can I use 3D printed aluminum alloy for small decorative parts (Por exemplo, chaveiros) sem gastar demais?
Yes—use Binding Jetting with Al6061 powder and basic sanding (no electroplating). A 10g keychain made this way costs 700 ~ 1,200 RMB, affordable for small-batch custom orders. Avoid SLM or high-grade AlSi10Mg for decorative parts, as they double or triple costs.
- How much does post-processing add to the total cost per gram of 3D printed aluminum alloy?
Post-processing typically adds 10 ~ 350 RMB/grama, depending on steps. Basic sanding adds 10 ~ 50 RMB/grama, while CNC trimming + anodizing adds 80 ~ 350 RMB/grama. Para a maioria das partes industriais, post-processing accounts for 20 ~ 50% of total cost per gram.