Stainless Steel Stamped Parts vs. Carbon Steel

In 2025, China's manufacturing industry sees a 28% year-on-year growth in demand for corrosion-resistant components (per China Machinery Industry Federation). Many enterprises face a dilemma: choose stainless steel stamped parts or carbon steel stamped parts? The former uses stainless steel for stamping, while the latter relies on carbon steel. This article will compare their core performance, cost & service life, processing technology, application scenarios, and introduce Xiamen APOLLO's targeted solutions.

 

 

1.1 Corrosion Resistance

Stamping 304 stainless steel parts have excellent corrosion resistance. They can withstand 500 hours of salt spray tests without rust. Carbon steel parts rust after 24 hours in the same environment, needing additional painting for protection.

 

1.2 Mechanical Strength

Carbon steel parts have higher tensile strength (500-600MPa) than stainless steel stamped parts (400-500MPa). But stainless steel parts have better toughness, not easy to break under impact-suitable for vibration-prone scenarios.

 

1.3 Weight and Density

Stainless steel parts have a density of 7.93g/cm³, slightly higher than carbon steel (7.85g/cm³). For lightweight - demanding products (e.g., auto parts), the weight difference brings little impact, but corrosion resistance becomes a key choice factor.

 

 

1. Material cost: Stainless steel (for stamping 304 stainless steel) is 2-3 times more expensive per ton than carbon steel. But stainless steel zinc plating drawing stamping parts avoid secondary processing like painting, reducing follow-up costs.

 

2. Service life: Stainless steel parts last 8-12 years in outdoor environments. Carbon steel parts only last 3-5 years even with painting-frequent replacement raises total cost.

 

3. Maintenance cost: Carbon steel parts need repainting every 1-2 years (costing ~$50/㎡ each time). Stainless steel parts require no maintenance, saving long-term expenses.

 

 

1. Surface Smoothness

Stainless metal stamping parts have a natural bright surface. After simple polishing, the roughness (Ra) can reach 0.8μm-no need for additional coating. Carbon steel parts have a matte, uneven surface; Ra is usually 1.6-3.2μm, requiring painting to improve appearance.

 

2. Thickness Uniformity

Stainless steel has stable stamping performance. Stainless metal stamping parts maintain a thickness deviation of ≤0.03mm across the whole part. Carbon steel is prone to uneven stress during stamping, resulting in 0.05–0.1mm thickness deviation that impacts structural stability.

 

3. Edge and Corner Processing

Stainless steel is hard but ductile. Stamping 304 stainless steel parts can form sharp, burr-free edges (radius ≤0.1mm) for precision components like pressure sensor housing. Carbon steel edges are easy to deform and burr, needing secondary grinding to meet assembly requirements.

 

 

Stainless steel and carbon steel stamped parts serve distinct fields. In automotive electronics, pressure sensor housing uses stainless metal stamping parts-their corrosion resistance prevents sensor failure from engine oil and moisture. In construction hardware (e.g., door hinges), carbon steel parts are common, as low cost matters more than long service life. In food machinery, stamping 304 stainless steel parts are mandatory-they meet food-grade standards and resist acid/alkali cleaning agents. In heavy machinery (e.g., crane hooks), carbon steel parts'high strength makes them suitable, but they need regular rust removal to avoid breakage.

 

 

Xiamen APOLLO focuses on high-precision stainless steel stamped parts, with core products including stamping 304 stainless steel components and stainless steel zinc plating drawing stamping parts. We use 99.9% high-purity 304 stainless steel raw materials, matching with 1200-ton precision stamping equipment-dimensional tolerance controls within ±0.01mm, 50% higher than industry averages.

 

Our products pass ISO9001-2015, IATF16949, and ROHS certifications, complying with GB/T 13914-2021 (Chinese stamping part standard) and DIN 2393 (international standard). We offer custom services: adjust stamping shapes (complex curved surfaces, thin-walled structures), thickness (0.1-5mm), and surface treatments (zinc plating, passivation) for automotive, electronics, and food machinery fields. Global logistics covers air (3-5 days to Asia), land (7-15 days to Southeast Asia), and sea (15-20 days to Europe/America). Our 24-hour technical team provides on-site stamping process guidance, ensuring each part meets customer performance requirements.