SPS多少钱一公斤？
这个问题一搜，从四十块一公斤到一百二十块一公斤，报价差得比间规度还多。有人说我买的四十的国产通用用得挺好，有人说我买的一百二十的进口高耐热才叫高端。到底差在哪？
说实话，问SPS多少钱一公斤的人，大概率还没搞懂SPS这东西不是一个料——通用级、高耐热级、高流动级、玻纤增强级、阻燃级，每个分支价格都不一样。你拿通用级的价和高耐热比，那不叫比价，叫被忽悠。
SPS就是间规聚苯乙烯，高耐热、低吸湿、耐化学，常用于电子电器、汽车配件、工业机械、连接器、薄膜。
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SPS（外企大厂）
通用级，参考价约60-90元/公斤。电子电器、汽车配件、工业机械。
高耐热级，参考价约80-110元/公斤。高温应用、汽车发动机周边、工业机械。
玻纤增强级，参考价约90-120元/公斤。结构件、汽车、工业机械。
国产SPS（中企大厂）
通用级，参考价约40-65元/公斤。性价比高，电子电器、汽车配件、工业机械。
高耐热级，参考价约55-85元/公斤。高温应用、汽车发动机周边、工业机械。
高流动级，参考价约60-90元/公斤。薄壁制品、复杂结构件、连接器。
一句话总结：国产通用40-65块，国产高耐热/高流动55-90块，进口通用60-90块，进口高耐热/玻纤增强80-120块。你要的是啥间规度和性能，决定了你该在哪一档选。
二、同是SPS，价差凭什么这么大
SPS的价格差，主要藏在四个地方。
第一，间规度不同。低间规便宜，高间规贵。间规度越高，耐热性和结晶性越好，但价格更高。
第二，耐热等级不同。通用级便宜，高耐热级贵。高耐热需要特殊间规度，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30-50%。
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。同样是高耐热级，进口比国产贵30-50%，贵的是品控和研发。
三、采购避坑：别让间规度骗了你
我见过太多采购，比价比到最后选了最便宜的四十的，然后做出来的制品耐热差、结晶慢、客户退货，一次损失够买半年的好料。
SPS采购这行，水比你想的深。三个坑必须绕开：
第一，看热变形温度和结晶速率不看牌号。同一个牌号不同批次性能可能波动，拿到料先测热变形温度和结晶速率，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PS当SPS卖，拿低间规当高间规卖。要COA、要间规度检测、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40块，做出来制品次品率5%；B料单价65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——比如要高耐热又要高流动、要低吸湿又要耐化学、要低成本又要阻燃级——那不是SPS的问题，是你需要的不是标准SPS，是改性SPS。
这时候可以看看宁波科隆新材目前在做的高性能改性SPS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SPS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，SPS行情一天一个样，苯乙烯、间规催化剂、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SPS这事儿，四十的和一百二十的，差的不是八十。
单价是门槛，选对间规度和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出高耐热电子电器的方案。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SPS采购上踩过什么坑？是耐热差还是结晶慢？评论区聊聊，点赞最高的三位，送一份SPS主流牌号选型对照表。
SPS和PS有什么区别
SPS间规度怎么选
SPS和PPS有什么区别
SPS改性料厂家怎么选
SPS注塑常见问题及解决
How much is SPS per kilogram?
SPS is not one material: high-heat, high-flow, GF-reinforced, 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 SPS
general-purpose, approx. CNY 60-90/kg. electronics; automotive parts; industrial machinery.
high-heat, approx. CNY 80-110/kg. engine compartments; industrial machinery.
GF-reinforced, approx. CNY 90-120/kg. structural parts; automotive; industrial machinery.
Domestic SPS
general-purpose, approx. CNY 40-65/kg. electronics; automotive parts; industrial machinery.
high-heat, approx. CNY 55-85/kg. engine compartments; industrial machinery.
high-flow, approx. CNY 60-90/kg. thin-wall parts; complex structural parts; connectors.
2. Why prices differ so much
Four factors: (1) composition — lower levels are cheaper; higher levels give better performance but cost more. (2) heat 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 SPS, you need a modified compound. Ningbo Kolong New Materials is developing high-performance modified SPS solutions covering glass-fiber reinforcement, flame retardancy, weatherability and conductivity. Message us for a modified SPS 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; SPS 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.
