PP/PA多少钱一公斤？
这个问题一搜，从十三块一公斤到三十二块一公斤，报价差得比PA比例还多。有人说我买的十三的国产通用用得挺好，有人说我买的三十二的进口高抗冲才叫高端。到底差在哪？
说实话，问PP/PA多少钱一公斤的人，大概率还没搞懂PP/PA这东西不是一个料——通用级、高抗冲级、耐热级、低吸湿级、阻燃级，每个分支价格都不一样。你拿通用级的价和高抗冲比，那不叫比价，叫被忽悠。
PP/PA就是聚丙烯/尼龙合金，结合了PP的低吸湿易加工和PA的高强度耐热，常用于汽车配件、电子电器、工业机械、家电外壳、结构件。
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PP/PA（外企大厂）
通用级，参考价约18-26元/公斤。汽车配件、电子电器、工业机械。
高抗冲级，参考价约22-30元/公斤。汽车配件、结构件、电动工具。
耐热级，参考价约24-32元/公斤。高温应用、汽车发动机周边、工业机械。
国产PP/PA（中企大厂）
通用级，参考价约13-20元/公斤。性价比高，汽车配件、电子电器、工业机械。
高抗冲级，参考价约16-24元/公斤。汽车配件、结构件、电动工具。
玻纤增强级，参考价约15-26元/公斤。结构件、汽车、工业机械。
一句话总结：国产通用13-20块，国产高抗冲/玻纤增强15-26块，进口通用18-26块，进口高抗冲/耐热22-32块。你要的是啥PA比例和性能，决定了你该在哪一档选。
二、同是PP/PA，价差凭什么这么大
PP/PA的价格差，主要藏在四个地方。
第一，PA比例不同。低PA便宜，高PA贵。PA比例越高，强度和耐热性越好，但吸湿性略增。
第二，抗冲等级不同。通用级便宜，高抗冲级贵。高抗冲需要特殊相容剂，价格更高。
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20-40%。
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。同样是高抗冲级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让PA比例骗了你
我见过太多采购，比价比到最后选了最便宜的十三的，然后做出来的制品强度差、耐热差、客户退货，一次损失够买半年的好料。
PP/PA采购这行，水比你想的深。三个坑必须绕开：
第一，看拉伸强度和热变形温度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测拉伸强度和热变形温度，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PP当PP/PA卖，拿低PA当高PA卖。要COA、要PA比例检测、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13块，做出来制品次品率5%；B料单价20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——比如要高强度又要低吸湿、要耐热又要高流动、要低成本又要阻燃级——那不是PP/PA的问题，是你需要的不是标准PP/PA，是改性PP/PA。
这时候可以看看宁波科隆新材目前在做的高性能改性PP/PA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PP/PA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，PP/PA行情一天一个样，丙烯、己内酰胺、相容剂、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PP/PA这事儿，十三的和三十二的，差的不是十九。
单价是门槛，选对PA比例和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出高强度低吸湿汽车配件的方案。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PP/PA采购上踩过什么坑？是强度差还是耐热差？评论区聊聊，点赞最高的三位，送一份PP/PA主流牌号选型对照表。
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How much is PP/PA per kilogram?
PP/PA is not one material: heat-resistant, flame-retardant, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported PP/PA
general-purpose, approx. CNY 18-26/kg. automotive parts; electronics; industrial machinery.
approx. CNY 22-30/kg. automotive parts; structural parts; power tools.
heat-resistant, approx. CNY 24-32/kg. engine compartments; industrial machinery.
Domestic PP/PA
general-purpose, approx. CNY 13-20/kg. automotive parts; electronics; industrial machinery.
approx. CNY 16-24/kg. automotive parts; structural parts; power tools.
GF-reinforced, approx. CNY 15-26/kg. structural parts; automotive; industrial machinery.
2. Why prices differ so much
Four factors: (1) PA ratio — lower levels are cheaper; higher levels give better performance but cost more. (2) impact grade — premium grades need special formulations and cost more. (3) reinforcement — special applications need special formulations or certification and cost more. (4) Brand and origin — imports carry a premium but offer batch stability; for the same grade, imports cost 30-50% more than domestic, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often fails on performance and triggers customer returns. Three traps to avoid:
First, test key properties against the COA instead of trusting the grade name — performance of the same grade can fluctuate between batches. Second, watch out for substitution fraud: some traders pass off cheaper or recycled material as the real thing; demand the COA, a test report and original packaging before use. Third, don't compare unit price alone — calculate total cost per finished part, including rejected-goods loss; a higher-priced grade with a 1% defect rate is often cheaper than a low-priced one with 5% rejects.
4. Standard grades not enough? Consider modified compounds
If standard grades always fall short — for example you need flame retardancy AND high transparency, reinforcement AND chemical resistance, or low cost AND food grade — you don't need standard PP/PA, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PP/PA solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PP/PA quote reference — it saves not only money but also trial-and-error time.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order. The higher your requirements, the more you need customization.
5. Popular grades — same-day quotes via message
All prices above are references; PP/PA prices change daily as feedstocks and exchange rates move. If you need same-day quotes for specific grades, message us and we will send a live price sheet. No beating around the bush — real numbers.
Final words
Unit price is the threshold; choosing the right grade and performance is the baseline. Do the math per finished part, add rejected-goods loss, and you will know who is truly cheap and who is truly expensive.
What pitfalls have you hit when buying this material? The three most-liked comments will receive a grade selection guide.
