PA612多少钱一公斤？
这个问题一搜，从二十三块一公斤到六十块一公斤，报价差得比碳链长度还多。有人说我买的二十三的EMS XE4188用得挺好，有人说我买的六十的杜邦159L才叫高透明。到底差在哪？
说实话，问PA612多少钱一公斤的人，大概率还没搞懂PA612这东西不是一个料——通用级、高透明级、玻纤增强级、食品级、高粘度级，每个分支价格都不一样。你拿通用级的价和高透明比，那不叫比价，叫被忽悠。
PA612是聚酰胺612，长碳链尼龙，比PA66吸水率低、尺寸稳定，常用于牙刷毛、化妆品刷、精密齿轮、汽车管路。
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。
杜邦（DuPont，美国）
Zytel 153HSL，耐高温热稳定纯树脂，参考价约32元/公斤。通用注塑、精密齿轮。
Zytel 159L，高透明级，参考价约60元/公斤。高透明制品、特殊应用。
Zytel 158/158L，中粘度通用级，参考价约35元/公斤。模塑、挤出、通用制品。
Zytel 77G33L，33%玻纤增强，参考价约59元/公斤。汽车结构件、工业机械。
Zytel 77G33HS1L，耐老化玻纤增强，参考价约55-65元/公斤。汽车、耐老化应用。
Zytel FG158 NC010，33%玻纤食品级，参考价约40-50元/公斤。食品接触、医疗器械。
EMS（瑞士）
Grilamid XE4188，耐水解耐酒精耐燃油高冲击，参考价约23元/公斤。汽车管路、燃油系统。
Grilamid CR-9，高粘度级，参考价约40-55元/公斤。挤出、薄膜、高粘度应用。
国产PA612
国产国标PA612，参考价约43元/公斤。通用注塑、挤出、刷丝。
国产通用级，参考价约30-40元/公斤。性价比高，通用注塑、刷丝。
一句话总结：通用级23-35块，食品级/玻纤增强40-60块，高透明/高粘度55-65块。你要的是啥碳链长度和性能，决定了你该在哪一档选。
二、同是PA612，价差凭什么这么大
PA612的价格差，主要藏在四个地方。
第一，粘度不同。低粘度适合注塑价格便宜，高粘度适合挤出和薄膜价格贵。高粘度PA612用于刷丝和薄膜。
第二，功能改性不同。玻纤增强、食品级、耐老化——这些都要加钱。玻纤增强比通用级贵50%以上。
第三，透明度不同。通用级半透明价格便宜，高透明级价格贵。高透明PA612用于特殊光学应用。
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。同样是通用级，杜邦比国产贵20-30%，贵的是品控和研发。
三、采购避坑：别让吸水率骗了你
我见过太多采购，比价比到最后选了最便宜的二十三的，然后做出来的刷丝强度不够、齿轮尺寸不稳定、客户退货，一次损失够买半年的好料。
PA612采购这行，水比你想的深。三个坑必须绕开：
第一，看熔指和吸水率不看牌号。同一个牌号不同批次性能可能波动，拿到料先测熔指和吸水率，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PA6当PA612卖，拿低粘度当高粘度卖。要COA、要碳链检测、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23块，做出来次品率5%；B料单价35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——比如要阻燃又要低吸水、要增强又要耐水解、要低成本又要食品级——那不是PA612的问题，是你需要的不是标准PA612，是改性PA612。
这时候可以看看宁波科隆新材目前在做的高性能改性PA612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PA612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，PA612行情一天一个样，丁二胺、十二碳二酸、汇率都在动。
如果你需要杜邦、EMS、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PA612这事儿，二十三的和六十的，差的不是三十七。
单价是门槛，选对粘度和性能才是底线。别让报价单上的数字迷惑了你——你买的不是一公斤塑料，是一公斤能做出低吸水制品的方案。把账算到每件制品上，再加上退货损失，你才知道谁真便宜谁真贵。
你在PA612采购上踩过什么坑？是吸水率高还是强度不够？评论区聊聊，点赞最高的三位，送一份PA612主流牌号选型对照表。
PA612和PA66有什么区别
PA612吸水率怎么选
PA612和PA12有什么区别
PA612改性料厂家怎么选
PA612注塑常见问题及解决
How much is PA612 per kilogram?
Quotes range from CNY 23/kg to CNY 60/kg. PA612 (polyamide 612) is a long-carbon-chain nylon with lower water absorption and better dimensional stability than PA66, not one material: general, high-transparency, GF-reinforced, food-grade and high-viscosity grades each carry a different price.
PA612 is used in toothbrush bristles, cosmetic brushes, precision gears and automotive tubing.
1. Mainstream grade quotes (imported + domestic) — recent market references; live prices subject to same-day inquiry.
DuPont (USA)
Zytel 153HSL, high-temperature, heat-stabilized virgin resin, approx. CNY 32/kg. General injection, precision gears.
Zytel 159L, high-transparency grade, approx. CNY 60/kg. High-transparency products, special applications.
Zytel 158/158L, medium-viscosity general grade, approx. CNY 35/kg. Molding, extrusion, general products.
Zytel 77G33L, 33% GF-reinforced, approx. CNY 59/kg. Automotive structural parts, industrial machinery.
Zytel 77G33HS1L, aging-resistant, GF-reinforced, approx. CNY 55-65/kg. Automotive, aging-resistant applications.
Zytel FG158 NC010, 33% GF food grade, approx. CNY 40-50/kg. Food contact, medical devices.
EMS (Switzerland)
Grilamid XE4188, hydrolysis-, alcohol- and fuel-resistant, high impact, approx. CNY 23/kg. Automotive tubing, fuel systems.
Grilamid CR-9, high-viscosity grade, approx. CNY 40-55/kg. Extrusion, film, high-viscosity applications.
Domestic PA612
Domestic national-standard PA612, approx. CNY 43/kg. General injection, extrusion, bristles.
Domestic general-purpose, approx. CNY 30-40/kg. Cost-effective; general injection, bristles.
In short: general CNY 23-35, food-grade/GF CNY 40-60, high-transparency/high-viscosity CNY 55-65.
2. Why prices differ so much
Four factors: (1) Viscosity — low viscosity suits injection and is cheap; high viscosity suits extrusion and film and costs more. (2) Functional modification — GF, food grade and aging resistance all add cost; GF costs more than 50% above general. (3) Transparency — general grades are translucent and cheap; high-transparency grades cost more for special optical applications. (4) Brand and origin — for the same general grade, DuPont costs 20-30% more than domestic, paying for quality control and R&D.
3. Procurement pitfalls
The cheapest material often gives bristles with insufficient strength or gears with dimensional instability, causing returns. Three traps to avoid:
First, test MFI and water absorption against the COA instead of trusting the grade name. Second, watch for substitution: some traders sell PA6 as PA612 or low-viscosity as high-viscosity; demand the COA, a carbon-chain test and original packaging. Third, calculate total cost: A at CNY 23/kg with a 5% defect rate vs. B at CNY 35/kg with 1% — B is cheaper per part.
4. Standard grades not enough? Consider modified compounds
If you need flame retardancy AND low water absorption, reinforcement AND hydrolysis resistance — you need modified PA612. Ningbo Kolong New Materials is developing high-performance modified PA612 grades covering GF reinforcement, flame retardancy, hydrolysis resistance and conductivity. Message us for a modified PA612 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
PA612 prices change daily — tetramethylenediamine, dodecanedioic acid and exchange rates all move. Message us for same-day quotes on specific grades from DuPont, EMS or domestic producers; real numbers.
Final words
The gap between CNY 23 and CNY 60 is not CNY 37. Unit price is the threshold; choosing the right viscosity and performance is the baseline. You are buying a solution for making low-water-absorption parts. Do the math per part, add returns, and you will know who is truly cheap.
What pitfalls have you hit buying PA612 — high water absorption or insufficient strength? The three most-liked comments will receive a PA612 grade selection guide.
