0.008mm Stainless Steel Sheet Foil

Ningbo Qihong Stainless Steel Co., Ltd. is a comprehensive precision stainless steel processing enterprise rooted in Ningbo High-Tech Zone, China, integrating R&D, rolling, slitting, testing and export logistics.

As a professional stainless steel manufacturer with complete industrial chain equipment, We owns full sets of continuous cold rolling mills, precision slitting lines, thickness detection gauges and surface defect inspection machines shown in factory production workshops. The enterprise adheres to the development concept of "survive by quality, develop by credibility", and has mastered core ultra-thin rolling technology to realize stable mass production of 0.008mm Stainless Steel Sheet Foil, breaking the supply barrier of high-end ultra-thin metal materials long relied on import.
As a reliable global supplier of precision stainless products, QIHONG provides one-stop solutions including raw material customization, precision processing, quality testing and export packaging for industrial customers across Asia, Europe and North America.

1. Core Product Parameters & Superior Performance

1.1 Basic Specifications of QIHONG 0.008mm Stainless Steel Sheet Foil

1. Thickness: Fixed ultra-thin 0.008mm, thickness tolerance controlled within ±0.0005mm
2. Available Steel Grades: 201, 301, 304, 316L, 430, 631, 904L
3. Width Range: 10mm–650mm, customizable slitting width as customer requirement
4. Surface Treatment: BA bright finish, 2B matte, brushed, mirror polishing
5. Supply Form: Full large coils, slit narrow strips, cut small sheets
6. Compliance Standard: ASTM, AISI, GB, ISO9001, RoHS environmental certification

1.2. 4 Unique Competitive Advantages

1. Ultra-high Dimensional Consistency Equipped with online micrometer real-time detection system in QIHONG factory, each foil coil undergoes full-length thickness scanning to eliminate uneven thickness defects common in inferior ultra-thin foil, ensuring uniform mechanical property of every section.
2. Outstanding Corrosion & High Temperature Resistance 316L grade foil resists acid, alkali and salt fog erosion; 304 grade can withstand continuous working temperature up to 600℃, suitable for thermal insulation and heat shielding components.
3. Ultra-flexible Ductility & Anti-fatigue The foil can be repeatedly folded more than 100,000 times without cracking, lighter than traditional thick stainless sheets, greatly reducing overall weight of finished equipment for lightweight upgrading.
4. Excellent Electromagnetic & Light Barrier Performance Dense metal microstructure realizes 99.9% EMI shielding efficiency, fully blocking light penetration, ideal for light-sensitive electronic components and precision laboratory sealing parts.

2. Real Industrial Application Cases

Combined with long-term cooperative customer projects, three verified mass application cases of QIHONG 0.008mm stainless steel foil are listed below:

Case 1: New Energy Solid State Battery Collection Barrier Film

A domestic new energy enterprise in Zhejiang adopts QIHONG 304 grade 0.008mm foil as isolation barrier between solid electrolyte and metal shell. Compared with imported copper foil, this stainless foil has stronger resistance to electrolyte corrosion, effectively avoiding short circuit risk of battery cells under long-term charge-discharge cycle. After 12-month reliability test, the product pass rate increased by 11%, and the customer placed annual bulk order of 180 tons.

Case 2: Aerospace Flexible Solar Wing Heat Insulation Wrapping

Aerospace component manufacturer purchases QIHONG 316L ultra-thin foil for wrapping flexible solar panel brackets on satellite wings. The 0.008mm thickness realizes lightweight design, while high temperature oxidation resistance protects internal circuits from space extreme temperature difference erosion. The material has passed aerospace-level vacuum cryogenic environment test and entered formal satellite batch production.

Case 3: Medical Micro Implant Sensor Substrate

Medical device factory uses QIHONG bright finish 0.008mm 316L foil as substrate of micro blood glucose monitoring sensor. The smooth, non-toxic and biocompatible surface will not cause tissue irritation after implantation; ultra-thin thickness ensures sensor miniaturization, and the product has obtained medical equipment raw material qualification certification.

3. Wide Application Industry Coverage

1. New Energy Industry: Solid-state battery barrier layers, fuel cell sealing gaskets, energy storage equipment electromagnetic shielding
2. Aerospace & Defense: Satellite thermal insulation wrapping, aircraft micro heat exchanger sheets, radar signal shielding parts
3. Medical Precision Equipment: Implant sensor substrates, sterile medical instrument packaging foil, micro surgical auxiliary components
4. Consumer Electronics & 5G: Foldable screen inner shielding layer, chip light-blocking film, communication base station micro shielding shell
5. Laboratory Precision Instruments: Vacuum chamber light barrier sheet, chemical reactor anti-corrosion lining, precision test fixture thin liner

4. FAQ About QIHONG 0.008mm Stainless Steel Sheet Foil

Q1: Is the 0.008mm ultra-thin foil easy to crack during bending and stamping processing?

A: QIHONG 0.008mm foil adopts fine-grain soft annealing process in rolling production. Under standard processing parameters (low bending angle, slow stamping speed, soft mold cushion), it can complete continuous folding and micro stamping without cracking. We will provide free processing parameter guide and small sample test service for new customers to match your production equipment.

Q2: What is the minimum order quantity of 0.008mm stainless steel foil, and can customized width/surface be supported?

A: The MOQ of standard grade (304/430) coil is 100kg, and small sample order of 5–20kg is acceptable for customer testing. Our factory supports full customization: arbitrary slitting width from 10mm to 650mm, BA/2B/brushed/mirror surface treatment, and fixed-size sheet cutting according to drawing. Customized special grades such as 631, 904L need 3–7 days production lead time.

Q3: How to store and transport the ultra-thin 0.008mm foil to avoid surface scratch and oxidation?

A: We adopt standard export protective packaging: inner waterproof kraft paper + PVC anti-scratch film + steel binding belt + fumigated wooden pallet. For customer storage requirements: place the foil coil in dry, constant temperature warehouse with humidity below 60%, avoid direct friction with hard metal tools when taking materials; if long-term storage exceeds 3 months, add anti-rust oil film wrapping on coil surface. During ocean transportation, we can provide vacuum packaging service at extra cost to prevent salt fog oxidation.

5. Logistics & Cooperation Contact

Complete Service System

1. Pre-sales: Free material sample delivery, technical parameter matching consultation, processing scheme customization
2. In-production: Real-time production progress tracking, third-party factory inspection support before shipment
3. After-sales: 24-hour technical response, compensation guarantee for surface defect and thickness unqualified batch