先甩个数。全球PEEK一年的有效产能加起来，也就一万几千吨，还没国内一个中型改性厂的总产量零头多。就这么点料，英国威格斯一家常年占着四成上下的份额，光它一家的产能就七千多吨一年。
这东西为什么这么金贵？因为它是少有的能在两百六十度长期干活、还能扛住几乎所有酸碱溶剂的塑料，一根航空紧固件、一片半导体晶圆载具，用它做，轻、稳、耐高温。贵是真贵，副牌也是真难找——这就是PEEK副牌这行水最深的地方。
PEEK：特种工程塑料里的耐温扛把子
PEEK，聚醚醚酮，特种工程塑料里公认的“耐温扛把子”。熔点三百多度，玻璃化转变一百四十多度，长期服役能到二百四十度上下，强度比铝还轻还韧，耐化学腐蚀几乎不挑。航空发动机周边、半导体晶圆载具、医疗植入物、人形机器人关节，都抢着用它。
全球前三家国外企业，按产能和份额排，座位很稳：英国威格斯(Victrex)，VICTREX PEEK，产能约七千多吨一年、全球份额约四成；比利时索尔维(现高性能业务拆分到世索科Syensqo)，KetaSpire系列，产能约两千五百吨一年、份额约一成半；德国赢创(Evonik)，VESTAKEEP系列，产能约一千八百吨一年、份额约一成。三家加起来占了全球PEEK产能的八九成，这是典型的寡头格局，后面才轮到国内厂商追赶。
PEEK副牌，不是残次航空料
PEEK副牌怎么来的？跟别的原厂副牌一个道理：威格斯同一条聚合线上下来的原生粒子，分子链一模一样，只是出厂检验时，粘度、灰分、色相这些指标小幅偏出正牌内控线，就走副牌。四大来源：开停车头尾料、切牌号过渡料、工艺波动致粘度或灰分飘移的批次、副线尾料。
跟回料的边界在这里特别要拎清：PEEK加工温度三百多度，回料是已经吃过一次高温的料，分子链已经断过一轮，再用它做航空结构件，强度根本没法保证；再生料波动更大。PEEK副牌是原厂第一次聚合的干净粒子，原生分子量跟正牌同源。但话说回来——PEEK副牌不是万能药，它只适合那些对粘度、灰分没到航空级极致要求的结构件、工业齿轮、一般机械件。做飞行关键件，该用正牌认证料还得用正牌。包装分大包装小包装，原厂原包。
威格斯：全链条专利，牌号体系最全
威格斯是这行的老大哥，手里攥着从单体合成到聚合的全链条专利，牌号体系最全，90HMF、450G、150G这些都是行业标杆。航空认证、医疗认证它做得最早最厚。
它的副牌特点是牌号全、批次相对稳，做一般工业结构件、齿轮、轴承保持架，副牌性价比就出来了。要注意：威格斯副牌流通里容易被人拿来当“医疗级”卖，医疗植入级对生物相容性认证要求极高，副牌没这个认证，别硬上医疗植入场景。
索尔维KetaSpire：高端纯净，主打医疗和电子封装
第二家索尔维，现在高性能聚合物业务在比利时世索科旗下。KetaSpire是它的PEEK品牌，主打高端医疗和电子封装，流动性和高纯净度做得好。
它的副牌料在高流动性薄壁件、一般半导体结构件上用得多。索尔维的脾气是牌号偏高端，副牌量相对少，市场上流通的KetaSpire副牌要仔细验来源，别拿普通PEEK改一改冒充。
赢创VESTAKEEP：错位竞争，主打医疗和特种改性
第三家德国赢创，VESTAKEEP系列。赢创走的是跟威格斯错位的路子，主打医疗级、纤维增强和特种改性，产能比前两家小一截但牌号特色强。它的副牌料在工业耐磨件、一般结构件里能见到。
三家对比：威格斯全、索尔维高端纯净、赢创特色改性。选PEEK副牌，先想清楚你的件要过哪条认证、耐温多少，再对牌号。
PEEK副牌三个坑，别拿副牌当航空级用
一是别拿副牌当航空级、医疗植入级用——这两个场景要的是认证和批次追溯，副牌没有那张认证卡。二是粘度对不上，PEEK粘度直接决定分子量和强度，做结构件粘度差一档，抗疲劳就掉档。
三是灰分和杂质，半导体载具那种高洁净要求的件，灰分必须压到很低，副牌灰分偏高就别上。另外PEEK吸潮小但加工前还是要烘干，副牌同样要按工艺卡烘，别省这一步。大包装适合批量结构件，小包装适合打样和小线。
科隆仓库现货｜PEEK电话
主推品牌：英国威格斯Victrex、索尔维/世索科Syensqo、德国赢创Evonik
主要牌号：VICTREX PEEK、KetaSpire、VESTAKEEP
包装规格：原厂原包，分大包装与小包装两种；小包副牌、箱装副牌、大包料/吨包料分档码放，按批量备货
仓库现货：PEEK副牌仓库现货5000吨左右
现货明细：小包副牌备货800-1000吨、箱装副牌备货300-500吨、大包料/吨包料备货3500-3900吨
供应保障：先测后签，进厂先把关键指标测一遍，对上用途再签合同
PEEK副牌选料口诀
一看用途分级，飞行关键件、植入件用正牌认证料；二对粘度分子量，结构件按载荷选档；三查灰分洁净度，半导体件卡灰分；四验批次来源，副牌要有原厂渠道；五按工艺卡烘干，三百多度加工不省这一步。
湘潭有家做航空配套结构件的客户，之前非威格斯正牌不用，一块一般承力结构件成本压不下来。后来把非飞行关键的二级承力件换了威格斯同牌号副牌，拉伸强度和耐热跟正牌对在同一区间，航空结构件的综合成本下来一截，关键件仍走正牌认证料。
这就是PEEK选副牌的分寸——关键部位不省，非关键部位把钱花在刀刃上。PEEK副牌不是残次航空料，是同一条聚合线上粘度或灰分化验差毫厘的原厂粒，分子链跟正牌没换。宁波市科隆新材料有限公司做进口PEEK副牌多年，威格斯、索尔维、赢创的副牌渠道都稳，航空和工业结构件选料的案子处理不少。
Let's throw out some numbers first. The total effective annual production capacity of PEEK globally is only around ten to twenty thousand tons, which is not even a fraction of the total output of a medium-sized domestic modified material factory. With such a small amount of material, one company in the UK, Victrex, consistently holds about 40% of the market share, and its own production capacity alone is over seven thousand tons per year.
Why is this stuff so expensive? Because it is a rare plastic that can work continuously at 260 degrees and withstand almost all acidic and alkaline solvents. Whether it's an aerospace fastener or a semiconductor wafer carrier, using it makes things light, stable, and heat-resistant. It is truly expensive, and alternative brands are really hard to find—this is the deepest part of the PEEK alternative brand industry.
PEEK: The temperature-resistant leader among specialty engineering plastics
PEEK, polyether ether ketone, is recognized in specialty engineering plastics as the 'temperature-resistant champion.' It has a melting point of over 300°C, a glass transition temperature of over 140°C, and can be in long-term service at around 240°C. It is stronger than aluminum, yet lighter and tougher, and is almost indiscriminately resistant to chemical corrosion. Surrounding aerospace engines, semiconductor wafer carriers, medical implants, and humanoid robot joints all compete to use it.
The top three foreign companies in the world, ranked by production capacity and market share, have very stable positions: Victrex (UK), VICTREX PEEK, with a production capacity of about over 7,000 tons per year and a global market share of about 40%; Solvay (Belgium, now the high-performance business is split into Syensqo), KetaSpire series, with a production capacity of about 2,500 tons per year and a share of about 15%; Evonik (Germany), VESTAKEEP series, with a production capacity of about 1,800 tons per year and a share of about 10%. Together, these three account for 80-90% of the global PEEK production capacity, which is a typical oligopoly pattern, with domestic manufacturers only catching up later.
PEEK sub-brand, not defective aviation material
How did PEEK sub-brands come about? The principle is the same as other original manufacturer sub-brands: the native particles from the same production line at Solvay have identical molecular chains. It's just that during factory inspection, if indicators such as viscosity, ash content, or color slightly deviate from the official internal control limits, they are classified as sub-brands. There are four main sources: start and end materials from production runs, transitional materials from different grades, batches with viscosity or ash content fluctuations due to process variations, and leftover materials from secondary lines.
The boundary regarding recycled material needs to be particularly clear here: PEEK is processed at over 300 degrees Celsius, and recycled material has already been exposed to high temperature once, so its molecular chains have already broken once; using it to make aerospace structural components means the strength simply cannot be guaranteed. Reprocessed materials are even more variable. PEEK secondary grade consists of clean particles from the manufacturer’s first polymerization, with original molecular weight derived from the same source as the primary grade. That said—PEEK secondary grade is not a cure-all; it is only suitable for structural parts, industrial gears, and general mechanical components that do not require aerospace-level extremes in viscosity or ash content. For flight-critical parts, you still need to use the certified primary grade. Packaging comes in large or small packs, in the manufacturer’s original packaging.
Wiggs: Full-chain patents, the most complete grade system
Wiggs is the big brother in this field, holding patents for the entire chain from monomer synthesis to polymerization, with the most complete grade system. 90HMF, 450G, 150G are all industry benchmarks. It was the earliest and most thorough in aviation and medical certifications.
Its secondary brand features include a complete range of numbers and relatively stable batches. For general industrial structural parts, gears, and bearing cages, the cost-performance ratio of the secondary brand stands out. Note: In circulation, the Wigus secondary brand is easily taken and sold as 'medical grade.' Medical implant-grade products have very high requirements for biocompatibility certification, which the secondary brand does not have, so do not force its use in medical implant scenarios.
Solvay KetaSpire: High-end purity, focused on medical and electronic packaging
The second company, Solvay, now has its high-performance polymer business under Belgium's Solvay Specialty Polymers. KetaSpire is its PEEK brand, focusing on high-end medical and electronic packaging, with good fluidity and high purity.
Its secondary-grade material is mostly used in high-flow thin-walled parts and general semiconductor structural components. Solvay's temperament is that its grades are relatively high-end, with a relatively small amount of secondary-grade material. The KetaSpire secondary-grade material circulating on the market should be carefully verified for its source; don't just modify ordinary PEEK and pass it off as such.
Evonik VESTAKEEP: Differentiated Competition, Focused on Medical and Specialty Modifications
The third German company is Evonik, VESTAKEEP series. Evonik takes a different path from Victrex, mainly focusing on medical-grade, fiber-reinforced, and special modified products. Its production capacity is slightly smaller than the first two companies, but the material grades are more distinctive. Its secondary brand materials can be seen in industrial wear parts and general structural parts.
Comparison of three brands: Victrex is comprehensive, Solvay is high-end and pure, Evonik has specialized modifications. When choosing a PEEK alternative brand, first consider what certification your part needs to pass and the required temperature resistance, then select the grade accordingly.
PEEK off-brand has three drawbacks, don't treat off-brand as aerospace grade
First, don't use a secondary brand as if it's aviation-grade or medical implant-grade—the two scenarios require certification and batch traceability, which a secondary brand doesn't have. Second, the viscosity doesn't match; PEEK viscosity directly determines molecular weight and strength. Using a different viscosity for structural parts will result in reduced fatigue resistance.
Third is ash content and impurities. For semiconductor carriers that require high cleanliness, the ash content must be reduced to a very low level, so don't use sub-brand materials with higher ash content. In addition, PEEK absorbs little moisture but still needs to be dried before processing, and sub-brand materials should also be dried according to the process card—don't skip this step. Large packaging is suitable for batch structural parts, while small packaging is suitable for prototyping and small production lines.
Cologne warehouse in stock | PEEK phone
Main promoted brands: UK Victrex, Solvay/Syensqo, Germany Evonik
Main grades: VICTREX PEEK, KetaSpire, VESTAKEEP
Packaging specifications: Original factory packaging, available in large and small packs; small packs are sub-branded, boxed sub-branded, large pack materials/ton bags are graded and stacked, stocked according to batch quantity.
Warehouse stock: PEEK alternative brand warehouse stock around 5,000 tons
Spot details: Small package secondary brand stock 800-1000 tons, carton secondary brand stock 300-500 tons, large package material/ton package material stock 3500-3900 tons
Supply Assurance: Test first, sign later. Before entering the factory, measure the key indicators once and then sign the contract if they meet the intended use.
PEEK Secondary Brand Material Selection Mnemonic
First, check the usage classification: for flight-critical parts and implants, use certified materials; second, check viscosity and molecular weight: select grades for structural parts based on load; third, check ash content and cleanliness: semiconductor parts are strict about ash content; fourth, verify batch source: secondary brands must have original factory channels; fifth, follow the process card for drying: when processing at over three hundred degrees, this step is not skipped.
There is a client in Xiangtan who makes aerospace support structural components. Previously, they did not use the genuine Wigus brand, and the cost of a single general load-bearing structural component could not be reduced. Later, they replaced the non-flight-critical secondary load-bearing components with Wigus sub-brand material of the same grade. The tensile strength and heat resistance are in the same range as the genuine brand, which brought down the overall cost of the aerospace structural components significantly, while the critical components still used the genuine certified material.
This is the nuance of choosing PEEK secondary brands—don’t skimp on critical parts, but spend wisely on non-critical parts. PEEK secondary brands are not defective aerospace materials; they are original factory pellets from the same production line with only minute differences in viscosity or ash content, with molecular chains unchanged from the primary brands. Ningbo Kolon New Materials Co., Ltd. has been producing imported PEEK secondary brands for many years, with stable secondary brand channels for Victrex, Solvay, and Evonik, and they have handled many cases of material selection for aerospace and industrial structural components.
