PC多少钱一公斤?国产和进口价格差到底在哪
PC多少钱一公斤?
这个问题一搜,从十三块一公斤到二十八块一公斤,报价差得比透光率还多。有人说我买的十四块的万华A1105用得挺好,有人说我买的十六块的科思创2805才叫稳定。到底差在哪?
说实话,问PC多少钱一公斤的人,大概率还没搞懂PC这东西不是一个料——通用级、高流动、阻燃、光学级、医疗级,每个分支价格都不一样。你拿通用级的价和医疗级比,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。
科思创(Covestro,原拜耳)
2805,通用级中粘度,参考价约16元/公斤。Makrolon系列,注塑挤出通用,外壳、透明件主力牌号。
2407,高流动低粘度,参考价约16-18元/公斤。薄壁制品、复杂结构件首选。
2858,医疗级,参考价约28元/公斤。生物相容、可蒸汽消毒,医疗器械专用。
SABIC(基础创新塑料)
141R,通用级低粘度,参考价约19元/公斤。Lexan系列,高流动,注塑级通用。
940A,阻燃V0级,参考价约18-19元/公斤。无卤阻燃,电子电器、充电器外壳。
乐天化学(Lotte)
PC-1100,通用级中粘度,参考价约14-16元/公斤。韩国品牌,性价比高,透明件、板材。
万华化学(中企大厂)
A1105,通用级中粘度,参考价约14-18元/公斤。国产主力牌号,质量稳定,价格比外企同级别低10-20%。
A1227,高流动低粘度,参考价约15-17元/公斤。薄壁注塑、复杂结构件。
一句话总结:通用级14-18块,高流动15-20块,阻燃18-25块,光学/医疗级25-40块。你要的是啥性能,决定了你该在哪一档选。
二、同是PC,价差凭什么这么大
PC的价格差,主要藏在四个地方。
第一,粘度和流动性不同。低粘度(高流动)适合薄壁注塑,加工效率高,价格也贵;中粘度通用,价格适中;高粘度适合挤出板材,价格相对低。
第二,功能改性不同。阻燃、抗UV、耐候、光学级、医疗级——这些都要加钱。你买的不是纯PC,是加了料的PC方案。
第三,分子量分布。分子量分布窄的批次稳定,加工窗口宽,价格也贵;分布宽的便宜但波动大。
第四,品牌和产地。进口溢价高但批次稳定,国产性价比高但质量参差。同样是通用级,科思创比万华贵10-20%,贵的是品控和研发。
三、采购避坑:别让透光率骗了你
我见过太多采购,比价比到最后选了最便宜的十四块的,然后做出来的制品黄变、应力开裂、客户退货,一次损失够买半年的好料。
PC采购这行,水比你想的深。三个坑必须绕开:
第一,看熔指不看牌号。同一个牌号不同批次熔指可能波动,拿到料先测熔指,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。有些贸易商拿回料当新料卖,拿通用级当光学级卖。要COA、要物性报告、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14块,做出来次品率5%;B料单价18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——比如要阻燃又要高流动、要增强又要透明、要耐候又要抗UV——那不是PC的问题,是你需要的不是标准PC,是改性PC。
这时候可以看看宁波科隆新材目前在做的高性能改性PC方案,玻纤增强、阻燃、抗UV、耐候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PC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,PC行情一天一个样,原油、双酚A、汇率都在动。
如果你需要科思创、SABIC、乐天、万华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PC这事儿,十四的和二十八的,差的不是十四。
单价是门槛,选对粘度和牌号才是底线。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PC采购上踩过什么坑?是黄变还是应力开裂?评论区聊聊,点赞最高的三位,送一份PC主流牌号选型对照表。
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PC注塑常见问题及解决
How much is PC per kilogram?
PC is not one material: high-flow, flame-retardant, optical, and each carries a different price.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
Covestro
2805, approx. CNY 16/kg. injection extrusion general.
2407, approx. CNY 16-18/kg. thin-wall parts.
2858, approx. CNY 28/kg. biocompatibility.
SABIC
141R, approx. CNY 19/kg. high-flow; injection general.
940A, approx. CNY 18-19/kg. electronics.
PC
PC-1100, approx. CNY 14-16/kg. sheet.
Wanhua Chemical
A1105, approx. CNY 14-18/kg.
A1227, approx. CNY 15-17/kg. complex structural parts.
2. Why prices differ so much
Four factors drive the price gap: composition or performance level, grade tier, application and brand/origin. Premium performance, special applications and imported brands all cost more; imports trade a premium for batch stability, while domestic grades offer better value.
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 PC, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified PC solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified PC 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; PC 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.