PSU多少钱一公斤？
这个问题一搜，从四十块一公斤到一百零八块一公斤，报价差得比耐温等级还多。有人说我买的四十块的索尔维GF-110用得挺好，有人说我买的一百零八的巴斯夫S2010才叫医疗级。到底差在哪？
说实话，问PSU多少钱一公斤的人，大概率还没搞懂PSU这东西不是一个料——通用级、玻纤增强级、医疗级、耐水解级、食品级，每个分支价格都不一样。你拿玻纤增强的价和医疗级比，那不叫比价，叫被忽悠。
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。
索尔维（Solvay，比利时）
Udel P-1700，通用级高耐热，参考价约84-88元/公斤。阻燃耐化学，电子医疗部件。
Udel GF-110，玻纤增强级，参考价约40元/公斤。医用、管道、食品服务、飞机。
Udel P-1720，注塑级，参考价约50-70元/公斤。通用注塑、结构件。
巴斯夫（BASF，德国）
Ultrason S2010，PSU食品医疗级，参考价约108元/公斤。提供TDS/ROHS/FDA报告，食品医疗认证。
Ultrason E2010，PESU级，参考价约120-150元/公斤。尺寸稳定高流动耐高温。
金发科技（中企大厂）
金发PSU通用级，参考价约50-70元/公斤。国产主力，性价比高，通用注塑、电子部件。
金发PSU玻纤增强级，参考价约40-60元/公斤。结构件、汽车部件。
一句话总结：玻纤增强级40-60块，通用级50-90块，食品/医疗级80-110块，高端特殊级110-150块。你要的是啥认证和耐水解，决定了你该在哪一档选。
二、同是PSU，价差凭什么这么大
PSU的价格差，主要藏在四个地方。
第一，玻纤含量不同。纯树脂贵，30%玻纤增强便宜一点。玻纤加得越多，强度越高，价格反而越低（因为填料便宜）。
第二，纯度不同。工业级纯度适中价格便宜，食品级/医疗级纯度高价格贵，医疗级需要生物相容性认证。
第三，耐水解性能不同。普通级耐水解一般价格便宜，耐水解级可以反复蒸汽灭菌价格贵。医疗级PSU必须耐水解。
第四，品牌和产地。进口溢价高但认证齐全，国产性价比高但认证有限。同样是医疗级，巴斯夫比金发贵50%以上，贵的是认证和品控。
三、采购避坑：别让认证骗了你
我见过太多采购，比价比到最后选了最便宜的四十块的，然后做出来的制品医疗认证不通过、耐水解差、客户退货，一次损失够买半年的好料。
PSU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HDT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PES当PSU卖，拿工业级当医疗级卖。要COA、要FDA/ISO认证、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，做出来次品率5%；B料单价100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——比如要阻燃又要高透明、要增强又要耐水解、要低成本又要医疗认证——那不是PSU的问题，是你需要的不是标准PSU，是改性PSU。
这时候可以看看宁波科隆新材目前在做的高性能改性PSU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PSU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，PSU行情一天一个样，双酚S、4,4'-二氯二苯砜、汇率都在动。
如果你需要索尔维、巴斯夫、金发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PSU这事儿，四十的和一百零八的，差的不是六十八。
单价是门槛，选对认证和耐水解才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出合格制品的方案。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PSU采购上踩过什么坑？是认证不通过还是耐水解差？评论区聊聊，点赞最高的三位，送一份PSU主流牌号选型对照表。
PSU和PPSU有什么区别
PSU医疗认证怎么选
PSU和PES有什么区别
PSU改性料厂家怎么选
PSU注塑常见问题及解决
How much is PSU per kilogram?
PSU is not one material: GF-reinforced, food-grade, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
PSU
Udel P-1700, general-purpose high heat resistance, approx. CNY 84-88/kg. flame-retardant chemical-resistant.
Udel GF-110, GF-reinforced, approx. CNY 40/kg. medical.
Udel P-1720, injection, approx. CNY 50-70/kg. general injection; structural parts.
BASF
Ultrason S2010, approx. CNY 108/kg.
Ultrason E2010, approx. CNY 120-150/kg. dimensional stability high-flow high-temperature.
Kingfa
approx. CNY 50-70/kg. general injection; electronic components.
approx. CNY 40-60/kg. structural parts; automotive parts.
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) purity — 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 heat deflection temperature and melt flow index 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 PSU, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PSU solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PSU 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; PSU 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.
