PBT/PET多少钱一公斤？
这个问题一搜，从十块五一公斤到三十五块一公斤，报价差得比玻纤含量还多。有人说我买的十块五的国产GF30用得挺好，有人说我买的三十五的巴斯夫B 4300 G6才叫高端。到底差在哪？
说实话，问PBT/PET多少钱一公斤的人，大概率还没搞懂PBT/PET这东西不是一个料——通用级、玻纤增强级、阻燃级、抗紫外线级、高流动级，每个分支价格都不一样。你拿通用级的价和玻纤增强比，那不叫比价，叫被忽悠。
PBT/PET就是聚对苯二甲酸丁二醇酯/聚对苯二甲酸乙二醇酯合金，结合了PBT的快速结晶和PET的高强度，常用于汽车、电子电器、连接器。
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。
基础创新塑料（SABIC，美国）
815-7001，高光泽增强15%低浮纤，参考价约21.2元/公斤。汽车配件、电子电器。
巴斯夫（BASF，德国）
Ultradur B 4040 G10，抗紫外线PBT/PET，参考价约27.9元/公斤。户外应用、汽车外饰。
Ultradur B 4406 G6，PBT+PET合金，参考价约25-35元/公斤。汽车、电子电器、连接器。
Ultradur B 4300 G6，高刚性印刷电路板，参考价约35元/公斤。电子电器、连接器、外壳。
巴斯夫通用PBT，参考价约18元/公斤。通用注塑、电子电器。
国产PBT/PET（中企大厂）
国产PBT/PET GF30，参考价约10.5-14元/公斤。性价比高，汽车、电子电器、连接器。
国产通用级，参考价约10-15元/公斤。通用注塑、电子电器。
国产玻纤增强级，参考价约12-20元/公斤。结构件、汽车、连接器。
一句话总结：国产通用10-15块，国产玻纤增强12-20块，进口通用18-25块，进口玻纤增强/抗紫外线25-35块。你要的是啥玻纤含量和性能，决定了你该在哪一档选。
二、同是PBT/PET，价差凭什么这么大
PBT/PET的价格差，主要藏在四个地方。
第一，玻纤含量不同。无筋通用便宜，30%玻纤增强适中，50%玻纤增强贵。玻纤含量越高，强度和刚性越好，但加工越难。
第二，PBT/PET比例不同。PBT含量高结晶快价格适中，PET含量高强度好但结晶慢价格略高。比例决定加工性能和力学性能。
第三，功能改性不同。阻燃、抗紫外线、耐水解——这些都要加钱。特殊功能需要特殊配方。
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。同样是玻纤增强，巴斯夫比国产贵50-100%，贵的是品控和研发。
三、采购避坑：别让玻纤含量骗了你
我见过太多采购，比价比到最后选了最便宜的十块五的，然后做出来的制品强度不够、浮纤严重、客户退货，一次损失够买半年的好料。
PBT/PET采购这行，水比你想的深。三个坑必须绕开：
第一，看玻纤含量和熔指不看牌号。同一个牌号不同批次性能可能波动，拿到料先测玻纤含量和熔指，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PBT当PBT/PET卖，拿低玻纤当高玻纤卖。要COA、要玻纤含量检测、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10.5块，做出来次品率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——比如要阻燃又要抗紫外线、要增强又要高流动、要低成本又要耐水解——那不是PBT/PET的问题，是你需要的不是标准PBT/PET，是改性PBT/PET。
这时候可以看看宁波科隆新材目前在做的高性能改性PBT/PET方案，玻纤增强、阻燃、耐水解、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PBT/PET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，PBT/PET行情一天一个样，PTA、BDO、EG、玻纤、汇率都在动。
如果你需要基础创新塑料、巴斯夫、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PBT/PET这事儿，十块五的和三十五的，差的不是二十四块五。
单价是门槛，选对玻纤含量和性能才是底线。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制品的方案。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PBT/PET采购上踩过什么坑？是强度不够还是浮纤严重？评论区聊聊，点赞最高的三位，送一份PBT/PET主流牌号选型对照表。
PBT/PET和PBT有什么区别
PBT/PET玻纤含量怎么选
PBT/PET和PET有什么区别
PBT/PET改性料厂家怎么选
PBT/PET注塑常见问题及解决
How much is PBT/PET per kilogram?
PBT/PET is not one material: GF-reinforced, flame-retardant, high-flow, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
PBT/PET
815-7001, approx. CNY 21.2/kg. automotive parts; electronics.
BASF
Ultradur B 4040 G10, approx. CNY 27.9/kg. outdoor applications; automotive exteriors.
Ultradur B 4406 G6, approx. CNY 25-35/kg. automotive; electronics; connectors.
Ultradur B 4300 G6, approx. CNY 35/kg. electronics; connectors.
approx. CNY 18/kg. general injection; electronics.
Domestic PBT/PET
approx. CNY 10.5-14/kg. automotive; electronics; connectors.
Domestic general-purpose, approx. CNY 10-15/kg. general injection; electronics.
Domestic GF-reinforced, approx. CNY 12-20/kg. structural parts; automotive; connectors.
2. Why prices differ so much
Four factors: (1) glass-fiber content — lower levels are cheaper; higher levels give better performance but cost more. (2) grade level — premium grades need special formulations and cost more. (3) functional modification — 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 PBT/PET, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PBT/PET solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PBT/PET 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; PBT/PET 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.
