HPA多少钱一公斤？
这个问题一搜，从四十块一公斤到一百二十块一公斤，报价差得比耐热等级还多。有人说我买的四十的国产通用用得挺好，有人说我买的一百二十的进口超高耐热才叫高端。到底差在哪？
说实话，问HPA多少钱一公斤的人，大概率还没搞懂HPA这东西不是一个料——通用级、高耐热级、超高耐热级、玻纤增强级、阻燃级，每个分支价格都不一样。你拿通用级的价和超高耐热比，那不叫比价，叫被忽悠。
HPA就是高性能聚酰胺，包括PA46、PA6T、PA9T、PA10T、PA12T等半芳香族和脂肪族高耐热尼龙，常用于汽车发动机周边、电子电器、连接器、线圈骨架、工业机械。
一、主流牌号报价（外企+中企）
先把市面上走量的牌号和参考价摆出来。以下为近期市场参考价，实时价格以当日询价为准。
进口HPA（外企大厂）
通用级，参考价约60-90元/公斤。汽车发动机周边、电子电器、连接器。
高耐热级，参考价约75-105元/公斤。工业机械、结构件、高温应用。
超高耐热级，参考价约90-120元/公斤。航空航天、高端汽车、特殊应用。
国产HPA（中企大厂）
通用级，参考价约40-65元/公斤。性价比高，汽车发动机周边、电子电器、连接器。
高耐热级，参考价约50-80元/公斤。工业机械、结构件、高温应用。
玻纤增强级，参考价约55-85元/公斤。结构件、汽车、工业机械。
一句话总结：国产通用40-65块，国产高耐热/玻纤增强50-85块，进口通用60-90块，进口高耐热/超高耐热75-120块。你要的是啥耐热等级和性能，决定了你该在哪一档选。
二、同是HPA，价差凭什么这么大
HPA的价格差，主要藏在四个地方。
第一，耐热等级不同。通用级便宜，超高耐热级贵。耐热等级越高，热变形温度越高，但价格越高。
第二，芳香族含量不同。低芳香族便宜，高芳香族贵。芳香族含量越高，耐热性和强度越好，但加工难度越大。
第三，增强方式不同。无筋通用便宜，玻纤增强贵。玻纤增强比无筋通用贵30-50%。
第四，品牌和产地。进口溢价高但批次稳定，国产性价比高但牌号少。同样是高耐热级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让耐热等级骗了你
我见过太多采购，比价比到最后选了最便宜的四十的，然后做出来的制品耐热差、变形、客户退货，一次损失够买半年的好料。
HPA采购这行，水比你想的深。三个坑必须绕开：
第一，看热变形温度和长期使用温度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测热变形温度和长期使用温度，和COA对得上再用。别听销售说"差不多"，差不多就是差很多。
第二，警惕以次充好。有些贸易商拿PA66当HPA卖，拿低耐热当高耐热卖。要COA、要耐热等级检测、要原厂包装，三证合一才敢用。
第三，别只比单价，算综合成本。A料单价40块，做出来制品次品率5%；B料单价65块，次品率1%。算到每件制品上，B料反而更便宜。
四、标准牌号满足不了？看看改性方案
如果你发现标准牌号怎么选都差点意思——比如要高耐热又要低翘曲、要玻纤增强又要高流动、要低成本又要阻燃级——那不是HPA的问题，是你需要的不是标准HPA，是改性HPA。
这时候可以看看宁波科隆新材目前在做的高性能改性HPA方案，玻纤增强、阻燃、耐候、导电这些方向都有对应牌号在做。有特殊需求的可以私信要一份改性HPA的报价参考，比自己买基料再加助剂调试，省的不只是钱，还有试错的时间。
说白了，标准料是大锅饭，改性料是定制菜。你的制品要求越高，越需要定制。
五、常用牌号，私信给你当日报价
上面的价格都是参考价，HPA行情一天一个样，己二胺、对苯二甲酸、间苯二甲酸、癸二胺、十二碳二胺、玻纤、阻燃剂、汇率都在动。
如果你需要进口、国产这些品牌的具体牌号当日报价，私信我，发你一份实时价格表。不绕弯子，报实数。
写在最后
买HPA这事儿，四十的和一百二十的，差的不是八十。
单价是门槛，选对耐热等级和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出高耐热连接器的方案。把账算到每件制品上，再加上次品退货损失，你才知道谁真便宜谁真贵。
你在HPA采购上踩过什么坑？是耐热差还是变形？评论区聊聊，点赞最高的三位，送一份HPA主流牌号选型对照表。
HPA和PA66有什么区别
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HPA和PA9T有什么区别
HPA改性料厂家怎么选
HPA注塑常见问题及解决
How much is HPA per kilogram?
Quotes range from CNY 40/kg to CNY 120/kg. HPA (high-performance polyamide) is not one material: general, high-heat, ultra-high-heat, glass-fiber-reinforced and flame-retardant grades each carry a different price. Comparing a general-purpose quote with an ultra-high-heat one is not price comparison; it is how you get fooled.
HPA covers semi-aromatic and aliphatic high-heat nylons including PA46, PA6T, PA9T, PA10T and PA12T, and is used in automotive engine compartments, electronics, connectors, coil bobbins and industrial machinery.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported HPA (overseas majors)
General-purpose, approx. CNY 60-90/kg. Engine compartments, electronics, connectors.
High-heat, approx. CNY 75-105/kg. Industrial machinery, structural parts, high-temperature applications.
Ultra-high-heat, approx. CNY 90-120/kg. Aerospace, premium automotive, special applications.
Domestic HPA (Chinese majors)
General-purpose, approx. CNY 40-65/kg. Cost-effective; engine compartments, electronics, connectors.
High-heat, approx. CNY 50-80/kg. Industrial machinery, structural parts, high-temperature applications.
Glass-fiber-reinforced, approx. CNY 55-85/kg. Structural parts, automotive, industrial machinery.
In short: domestic general CNY 40-65, domestic high-heat/GF-reinforced CNY 50-85, imported general CNY 60-90, imported high-heat/ultra-high-heat CNY 75-120.
2. Why prices differ so much
Four factors: (1) Heat grade — higher heat deflection temperature costs more. (2) Aromatic content — higher aromatic content improves heat resistance and strength but makes processing harder. (3) Reinforcement — GF-reinforced grades cost 30-50% more than unreinforced. (4) Brand and origin — imports cost 30-50% more for the same grade, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often fails on heat resistance or deforms, causing returns. Three traps to avoid:
First, test HDT and long-term service temperature against the COA instead of trusting the grade name. Second, watch for substitution: some traders sell PA66 as HPA or low-heat as high-heat; demand the COA, a heat-grade test and original packaging. Third, calculate total cost: A at CNY 40/kg with a 5% defect rate vs. B at CNY 65/kg with 1% — B is cheaper per part.
4. Standard grades not enough? Consider modified compounds
If you need high heat AND low warpage, GF reinforcement AND high flow — you need modified HPA. Ningbo Kolong New Materials is developing high-performance modified HPA grades covering GF reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified HPA quote reference.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order.
5. Same-day quotes via message
HPA prices change daily — hexamethylenediamine, terephthalic acid, isophthalic acid, sebacic diamine, dodecanediamine, glass fiber, flame retardants and exchange rates all move. Message us for same-day quotes; real numbers.
Final words
The gap between CNY 40 and CNY 120 is not CNY 80. Unit price is the threshold; choosing the right heat grade and performance is the baseline. You are buying a solution for making high-heat connectors. Do the math per part, add rejected-goods loss, and you will know who is truly cheap.
What pitfalls have you hit buying HPA — poor heat resistance or deformation? The three most-liked comments will receive an HPA grade selection guide.
