EPS多少钱一公斤？
这个问题一搜，从十块一一公斤到十六块一公斤，报价差得比发泡倍率还多。有人说我买的十一块三的兴达PKF用得挺好，有人说我买的十六的巴斯夫BF-495才叫稳定。到底差在哪？
说实话，问EPS多少钱一公斤的人，大概率还没搞懂EPS这东西不是一个料——普通料、阻燃料、高等级阻燃料、石墨烯料、大粒径料，每个分支价格都不一样。你拿普通料的价和高等级阻燃比，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。
巴斯夫（BASF，德国）
Styropor BF-495，稳定性能小颗粒，参考价约16元/公斤。高发泡率、稳定性能，高端包装。
Styropor通用级，参考价约13-15元/公斤。通用包装、保温。
锦湖（Kumho，韩国）
锦湖EPS通用级，参考价约12-14元/公斤。性价比高，通用包装、保温。
兴达（Xingda，中企大厂）
PKF普通料，参考价约11.35元/公斤（出厂价）。通用发泡、板材、包装。
ZFR普通阻燃料，参考价约11.85元/公斤（出厂价）。阻燃包装、保温。
SFR高等级阻燃料，参考价约11.95元/公斤（出厂价）。高端阻燃、建筑保温。
PKF-301XS易发泡省蒸汽，参考价约12元/公斤。低密度制品、板材。
龙王牌（龙王，中企）
龙王牌EPS通用级，参考价约13.8-14元/公斤。泡沫箱、包装、保温。
龙王牌B-4S微细颗粒，参考价约14元/公斤。精细发泡、小件包装。
一句话总结：普通料11-12块，普通阻燃11.5-12.5块，高等级阻燃12-13块，进口稳定级13-16块。你要的是啥阻燃等级和粒径，决定了你该在哪一档选。
二、同是EPS，价差凭什么这么大
EPS的价格差，主要藏在四个地方。
第一，阻燃等级不同。普通料不阻燃便宜，普通阻燃料适中，高等级阻燃料贵。建筑保温用EPS必须高等级阻燃。
第二，粒径不同。普通粒径便宜，微细颗粒贵，大粒径也贵。粒径决定发泡倍率和制品表面质量。
第三，发泡性能不同。普通料发泡需要更多蒸汽，易发泡料省蒸汽但价格略高。算到能耗上，易发泡料反而更划算。
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。同样是普通料，巴斯夫比兴达贵40%，贵的是品控和稳定性。
三、采购避坑：别让发泡倍率骗了你
我见过太多采购，比价比到最后选了最便宜的十一块的，然后发泡倍率不够、制品密度高、蒸汽消耗大、客户退货，一次损失够买半年的好料。
EPS采购这行，水比你想的深。三个坑必须绕开：
第一，看发泡倍率和粒径不看牌号。同一个牌号不同批次性能可能波动，拿到料先测发泡倍率和粒径分布，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。有些贸易商拿普通料当阻燃料卖，拿大粒径当微细颗粒卖。要COA、要阻燃测试报告、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11块，发泡倍率40倍，蒸汽消耗高；B料单价12块，发泡倍率50倍，省蒸汽。算到每立方米制品上，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——比如要阻燃又要高发泡、要石墨烯导电又要低成本、要大粒径又要稳定——那不是EPS的问题，是你需要的不是标准EPS，是改性EPS。
这时候可以看看宁波科隆新材目前在做的高性能改性EPS方案，阻燃、石墨烯导电、高发泡、低导热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EPS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，EPS行情一天一个样，苯乙烯、戊烷、汇率都在动。
如果你需要巴斯夫、锦湖、兴达、龙王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EPS这事儿，十一块的和十六块的，差的不是五块。
单价是门槛，选对阻燃等级和发泡倍率才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一立方米能发泡成型的方案。把账算到每立方米制品上，再加上蒸汽能耗和次品损失，你才知道谁真便宜谁真贵。
你在EPS采购上踩过什么坑？是发泡倍率不够还是阻燃不达标？评论区聊聊，点赞最高的三位，送一份EPS主流牌号选型对照表。
EPS和EPP有什么区别
EPS发泡倍率怎么选
EPS和XPS有什么区别
EPS改性料厂家怎么选
EPS发泡常见问题及解决
How much is EPS per kilogram?
Quotes range from CNY 10.1/kg to CNY 16/kg. EPS (expandable polystyrene) is not one material: standard, flame-retardant, high-grade flame-retardant, graphene and large-particle grades each carry a different price. Comparing a standard quote with a high-grade flame-retardant one is not price comparison; it is how you get fooled.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
BASF (Germany)
Styropor BF-495, stable performance, fine particles, approx. CNY 16/kg. High expansion ratio, stable performance; premium packaging.
Styropor general-purpose, approx. CNY 13-15/kg. General packaging, insulation.
Kumho (South Korea)
Kumho EPS general-purpose, approx. CNY 12-14/kg. Cost-effective; general packaging, insulation.
Xingda (Chinese major)
PKF standard grade, approx. CNY 11.35/kg (ex-works). General foaming, board, packaging.
ZFR standard flame-retardant, approx. CNY 11.85/kg (ex-works). Flame-retardant packaging, insulation.
SFR high-grade flame-retardant, approx. CNY 11.95/kg (ex-works). Premium flame retardancy, building insulation.
PKF-301XS easy-foaming, steam-saving, approx. CNY 12/kg. Low-density products, board.
Longwang (Chinese producer)
Longwang general-purpose, approx. CNY 13.8-14/kg. Foam boxes, packaging, insulation.
Longwang B-4S fine particles, approx. CNY 14/kg. Fine foaming, small-part packaging.
In short: standard CNY 11-12, standard flame-retardant CNY 11.5-12.5, high-grade flame-retardant CNY 12-13, imported stable grades CNY 13-16.
2. Why prices differ so much
Four factors: (1) Flame-retardant grade — building insulation EPS must be high-grade flame-retardant. (2) Particle size — it decides expansion ratio and surface quality; fine particles and very large particles cost more. (3) Foaming performance — easy-foaming grades save steam and are slightly dearer, but cheaper on energy per part. (4) Brand and origin — for the same standard grade, BASF costs about 40% more than Xingda, paying for quality control and stability.
3. Procurement pitfalls
The cheapest material often means insufficient expansion ratio, high part density, heavy steam consumption and returns. Three traps to avoid:
First, test expansion ratio and particle-size distribution against the COA instead of trusting the grade name. Second, watch for substitution: some traders sell standard as flame-retardant or large particles as fine particles; demand the COA, a flame-retardancy test report and original packaging. Third, calculate total cost per cubic meter: A at CNY 11/kg with a 40x expansion ratio and high steam consumption vs. B at CNY 12/kg with 50x and less steam — B is cheaper.
4. Standard grades not enough? Consider modified solutions
If you need flame retardancy AND high expansion, graphene conductivity AND low cost — you need modified EPS. Ningbo Kolong New Materials is developing high-performance modified EPS solutions covering flame retardancy, graphene conductivity, high expansion and low thermal conductivity. Message us for a modified EPS quote reference.
In plain terms: standard grades are a big pot of shared rice; modified compounds are a dish cooked to order.
5. Same-day quotes via message
EPS prices change daily — styrene, pentane and exchange rates all move. Message us for same-day quotes on specific grades from BASF, Kumho, Xingda or Longwang; real numbers.
Final words
The gap between CNY 11 and CNY 16 is not CNY 5. Unit price is the threshold; choosing the right flame-retardant grade and expansion ratio is the baseline. You are buying a cubic meter of foamable solution. Add steam energy and rejected-goods loss into the per-cubic-meter math, and you will know who is truly cheap.
What pitfalls have you hit buying EPS — insufficient expansion or off-spec flame retardancy? The three most-liked comments will receive an EPS grade selection guide.
