TPA多少钱一公斤？
这个问题一搜，从三十五块一公斤到九十块一公斤，报价差得比硬度还多。有人说我买的三十五的国产低硬度用得挺好，有人说我买的九十的进口高硬度才叫高端。到底差在哪？
说实话，问TPA多少钱一公斤的人，大概率还没搞懂TPA这东西不是一个料——低硬度级、中硬度级、高硬度级、医用级、食品级，每个分支价格都不一样。你拿低硬度的价和高硬度比，那不叫比价，叫被忽悠。
TPA就是热塑性聚酰胺，由聚酰胺硬段和聚醚或聚酯软段嵌段共聚制得，高弹性、耐化学、耐低温，常用于汽车配件、医疗器械、消费品、工业软管、电线电缆。
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TPA（外企大厂）
低硬度级，参考价约50-70元/公斤。软质制品、消费品、密封件。
中硬度级，参考价约60-80元/公斤。汽车配件、工业软管、电线电缆。
高硬度级，参考价约70-90元/公斤。结构件、工业应用、特殊制品。
国产TPA（中企大厂）
低硬度级，参考价约35-52元/公斤。性价比高，软质制品、消费品、密封件。
中硬度级，参考价约42-62元/公斤。汽车配件、工业软管、电线电缆。
高硬度级，参考价约48-70元/公斤。结构件、工业应用、特殊制品。
一句话总结：国产低硬度35-52块，国产中/高硬度42-70块，进口低硬度50-70块，进口中/高硬度60-90块。你要的是啥硬度和性能，决定了你该在哪一档选。
二、同是TPA，价差凭什么这么大
TPA的价格差，主要藏在四个地方。
第一，硬度不同。低硬度便宜，高硬度贵。硬度越高，强度和耐磨性越好，但弹性略降。
第二，软段类型不同。聚醚软段便宜，聚酯软段贵。聚酯软段耐油性好，但价格更高。
第三，用途不同。通用级便宜，医用/食品级贵。特殊用途需要特殊认证，价格更高。
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。同样是中硬度级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让硬度骗了你
我见过太多采购，比价比到最后选了最便宜的三十五的低硬度，然后做出来的制品强度不够、变形、客户退货，一次损失够买半年的好料。
TPA采购这行，水比你想的深。三个坑必须绕开：
第一，看硬度和拉伸强度不看牌号。同一个牌号不同批次性能可能波动，拿到料先测硬度和拉伸强度，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TPEE当TPA卖，拿低硬度当高硬度卖。要COA、要硬度检测、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35块，做出来制品次品率5%；B料单价52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——比如要高弹性又要高强度、要耐低温又要耐化学、要低成本又要医用级——那不是TPA的问题，是你需要的不是标准TPA，是改性TPA。
这时候可以看看宁波科隆新材目前在做的高性能改性TPA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TPA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，TPA行情一天一个样，己内酰胺、聚醚多元醇、聚酯多元醇、催化剂、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TPA这事儿，三十五的和九十的，差的不是五十五。
单价是门槛，选对硬度和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出高弹性汽车配件的方案。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TPA采购上踩过什么坑？是强度不够还是变形？评论区聊聊，点赞最高的三位，送一份TPA主流牌号选型对照表。
TPA和TPEE有什么区别
TPA硬度怎么选
TPA和PEBA有什么区别
TPA改性料厂家怎么选
TPA加工常见问题及解决
How much is TPA per kilogram?
TPA is not one material: high-hardness, medical, food-grade, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Imported TPA
approx. CNY 50-70/kg. soft products; seals.
approx. CNY 60-80/kg. automotive parts; industrial hoses; wire and cable.
high-hardness, approx. CNY 70-90/kg. structural parts; industrial applications.
Domestic TPA
approx. CNY 35-52/kg. soft products; seals.
approx. CNY 42-62/kg. automotive parts; industrial hoses; wire and cable.
high-hardness, approx. CNY 48-70/kg. structural parts; industrial applications.
2. Why prices differ so much
Four factors: (1) hardness — lower levels are cheaper; higher levels give better performance but cost more. (2) grade level — premium grades need special formulations and cost more. (3) application — 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 TPA, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified TPA solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified TPA 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; TPA 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.
