收缩率系指塑胶制品冷却固化经脱模成形后，其尺寸与原模具尺寸间之误差百分比，可依ASTMD955方法测得。在塑胶模具设计时，须先考虑收缩率，以免造成成品尺寸的误差，导致成品不良。
塑料成型加工温度，模具温度及射出成型过程的一般塑胶收缩率中文名称英文密度玻璃纤维含量线性热膨胀系数平均比热热导率加工温度模具温度收缩率[g/cm3][%]10-5/k-1[KJ/(kgxK)][℃][℃][%]
聚苯乙烯PS1.056~81.2~1.30.16180-280100.3-0.6聚苯乙烯，中.高冲击性HI-PS1.051.21170-2605-750.5-0.6聚苯乙烯-丙烯晴SAN1.081.3180-27050-800.5-0.7丙烯晴-丁二烯-苯乙烯ABS1.061.4210-27550-900.4-0.7苯烯晴-苯乙烯-丙烯酸ASA1.071.3230-26040-900.4-0.6低密度聚乙烯LDPE0.95413~201.9~2.10.35160-26050-701.5-5.0高密度聚乙烯HDPE0.9211~132.3-2.50.44260-30030-701.5-3.0聚丙烯PP0.9156~100.84-2.50.24250-27050-751.0-2.5聚丙烯-GRPPGR1.15301.1-1.35260-28050-800.5-1.2聚异丁烯IB150-200聚甲基戊烯PMP0.83280-310701.5-3.0软质聚氯乙烯PVC-soft1.387~250.850.15170-20015-500.5硬质聚氯乙烯PVC-rigid1.385~18.50.83-1.050.16180-21030-500.5聚氟亚乙烯PVDF1.2250-27090-1003.0-6.0聚四氟乙烯PTFE2.12-2.17101.02~1.080.27320-360200-2303.5-6.0氟化乙烯基丙烯共聚物FEP2.153.0-4.0聚甲基丙烯酸甲脂（丙烯）PMMA1.184.51.39~1.460.19210-24050-700.1-0.8聚甲醛POM1.42101.47-1.50.23200-210901.9-2.3聚苯撑氧或聚氧化亚苯PPO1.061.45250-30080-1000.5-0.7聚苯撑氧-GRPPO-GR1.27301.3280-30080-1000.7醋酸纤维素CA1.27-1.31.3-1.7180-32050-800.5醋酸-丁酸纤维素CAB1.17-1.221.3-1.7180-23050-800.5丙酸纤维表素CP1.19-1.231.7180-23050-800.5聚碳酸醋PC1.21.3280-32080-1000.8聚碳酸脂-GRPC-GR1.4210-321.1300-330100-1200.15-0.55聚氨基甲酸酯TPU10~201.760.3聚乙烯对苯二甲酸乙酯PET1.010.14聚乙烯对苯二甲酸乙酯-GRPET-GR1.5-1.5720-30260-2901401.2-2.0聚丁烯对苯二酸PBT1.3240-26060-801.5-2.5聚丁烯对苯二酸-GRPBT-GR1.52-1.5730-50250-27060-800.3-1.2尼龙6（聚酸胺6）PA61.1461.6~1.80.31240-26070-1200.5-2.2尼龙6-GRPA6-GR1.36-1.6530-501.26-1.7270-29070-1200.3-1尼龙6/6PA661.1591.70.25260-29070-1200.5-2.5尼龙6/6-GRPA66-GR1.20-1.6530-501.4280-31070-1200.5-1.5尼龙11PA111.03-1.052.4210-25040-800.5-1.5尼龙12PA121.01-1.041.2210-25040-800.5-1.5聚醚砜PES5.51.120.18聚醚矾PSO1.37310-390100-1600.7聚硫化亚苯PPS1.64403701500.2热塑性聚亚胺脂PUR1.21.85195-23020-400.9酚甲醛树脂GPPF1.41.360-80170-1901.2三聚氰胺甲醛GPMF1.51.370-80150-1651.2-2三聚氰胺酚甲醛MPF1.61.160-80160-1800.8-1.8聚脂树脂UP2.0-2.10.940-60150-1700.5-0.8环氧树脂EP1.930-8081.05-1.90.17160-1700.2氧丁橡胶241.70.21天然橡胶1.920.18聚乙丁烯1.95
改性工程塑料成型收缩率（ASTMD955）
PA6系列成型收缩率名称及描述成型收缩率%备注15%玻纤增强PA60.5-0.8PA6G1520%玻纤增强PA60.4-0.6PA6G2030%玻纤增强PA60.3-0.5PA6G3040%玻纤增强PA60.1-0.3PA6G4050%玻纤增强PA60.1-0.3PA6G5025%玻纤增强阻燃PA60.2-0.4Z-PA6G2530%玻纤增强阻燃PA60.2-0.4Z-PA6G3030%玻纤增强无卤阻燃PA60.2-0.4Z-PA6G30无卤阻燃PA60.8-1.2Z-PA630%矿物填充无卤阻燃PA60.5-0.8Z-PA6M3030%玻璃微珠填充PA60.8-1.2PA6M3030%玻纤矿物复合填充PA60.3-0.5PA6M3040%玻纤矿物复合填充PA60.2-0.5PA6M4030%矿物填充PA60.6-0.9PA6M3040%矿物填充PA60.4-0.7PA6M40PA6一般注塑级1.4-1.8PA6PA6快速成型1.2-1.6PA6PA6一般增韧1.0-1.5PA6PA6中等增韧0.9-1.3PA6PA6超增韧0.9-1.3PA6MoS2填充耐磨PA61.0-1.4PA6PA66系列成型收缩率
名称及描述成型收缩率%备注15%玻纤增强PA660.6-0.9PA66G1520%玻纤增强PA660.5-0.8PA66G2025%玻纤增强耐热油PA660.4-0.7PA66G2530%玻纤增强PA660.4-0.7PA66G3030%玻纤增强耐水解PA660.3-0.6PA66G3040%玻纤增强PA660.2-0.5PA66G4050%玻纤增强PA660.1-0.3PA66G5025%玻纤增强阻燃PA660.2-0.4Z-PA66G2530%玻纤增强阻燃PA660.2-0.4Z-PA66G3030%矿物填充无卤阻燃PA660.2-0.4PA66M30无卤阻燃PA660.8-1.2Z-PA6630%矿物填充无卤阻燃PA660.4-0.7Z-PA66M3030%玻璃微珠填充PA660.8-1.2PA66M3030%玻纤矿物复合填充PA660.2-0.5PA66M3030%矿物填充PA660.6-0.9PA66M3040%矿物填充PA660.4-0.7PA66M40一般注塑级PA661.5-1.8PA66快速成型PA661.5-1.8PA66一般增韧PA661.2-1.7PA66中等增韧PA661.2-1.6PA66超增韧PA661.2-1.6PA66MoS2填充耐磨PA661.2-1.6PA66PA/ABS系列成型收缩率
名称及描述成型收缩率%备注10%玻纤增强PA/ABS0.3-0.6PA/ABSG1020%玻纤增强PA/ABS0.2-0.5PA/ABSG2030%玻纤增强PA/ABS0.1-0.3PA/ABSG3020%玻纤增强阻燃PA/ABS0.2-0.5Z-PA/ABSG20耐冲击PA/ABS0.5-0.8PA/ABS高冲击PA/ABS0.8-1.0PA/ABSPP系列成型收缩率
名称及描述成型收缩率%备注20%滑石粉填充PP1.0-1.5PPM2030%滑石粉填充PP0.8-1.2PPM3040%滑石粉填充PP0.8-1.0PPM4020%滑石粉填充增韧PP1.0-1.2PPM2020%碳酸钙填充PP1.2-1.6PPM2010%玻纤增强PP0.7-1.0PPG1020%玻纤增强PP0.5-0.8PPG2030%玻纤增强PP0.4-0.7PPG3040%玻纤增强PP0.3-0.5PPG4020%玻璃微珠填充PP1.2-1.6PPM2030%玻璃微珠填充PP1.0-1.2PPM2015%玻纤增强阻燃PP0.5-0.7Z-PPG1520%玻纤增强阻燃PP0.3-0.5Z-PPG2030%玻纤增强阻燃PP0.2-0.4Z-PPG30溴系阻燃级PP1.5-1.8PP无卤阻燃级PP1.3-1.6PP高流动高钢性PP1.5-2.0PP一般增韧PP1.5-2.0PP中等增韧PP1.4-1.9PP超增韧PP1.3-1.8PP耐热老化PP11.5-2.0PP1耐热老化PP21.5-2.0PP2耐热老化PP31.5-2.0PP3抗冲击耐侯PP41.5-2.0PP4高抗冲耐侯PP51.5-1.8PP520%滑石粉填充PP61.0-1.2PP630%滑石粉填充PP70.9-1.1PP740%滑石粉填充PP80.8-1.0PP820%玻纤增强PP90.5-0.8PP930%玻纤增强高耐热PP0.4-0.7PP10PC系列成型收缩率
名称及描述成型收缩率%备注10%玻纤增强PC0.3-0.5PCG1020%玻纤增强PC0.3-0.5PCG2025%玻纤增强PC0.2-0.4PCG2530%玻纤增强PC0.2-0.4PCG3020%玻纤增强阻燃PC0.2-0.4Z-PCG2025%玻纤增强阻燃PC0.2-0.4Z-PCG2530%玻纤增强阻燃PC0.2-0.4Z-PCG3020%玻纤增强无卤阻燃PC0.2-0.4Z-PCG2030%玻纤增强无卤阻燃PC0.1-0.3Z-PCG3020%玻璃微珠填充PC0.3-0.6PCM20PC/ABS系列成型收缩率
名称及描述成型收缩率%备注20%玻纤增强PC/ABS0.2-0.4PC/ABSG20溴系阻燃PC/ABS0.3-0.6Z-PC/ABS无卤阻燃PC/ABS0.4-0.7Z-PC/ABS耐侯级PC/ABS0.4-0.7PC/ABS35%PC0.4-0.6PC/ABS65%PC0.4-0.7PC/ABS85%PC0.4-0.7PC/ABSPC/PBT系列成型收缩率
名称及描述成型收缩率%备注10%玻纤增强PC/PBT0.5-0.8PC/PBTG1020%玻纤增强PC/PBT0.4-0.6PC/PBTG2030%玻纤增强PC/PBT0.3-0.5PC/PBTG3030%玻纤增强阻燃高耐热PC/PBT0.3-0.5Z-PC/PBTG30高冲击高耐热PC/PBT0.6-1.0PC/PBTPBT/ABS系列成型收缩率
名称及描述成型收缩率%备注20%玻纤增强PBT/ABS0.3-0.5PBT/ABSG2030%玻纤增强PBT/ABS0.2-0.4PBT/ABSG3020%玻纤增强阻燃PBT/ABS0.2-0.4Z-PBT/ABSG2030%玻纤增强阻燃PBT/ABS0.2-0.4Z-PBT/ABSG30通用注塑级PBT/ABS0.8-1.2PBT/ABS通用阻燃级PBT/ABS0.7-1.1PBT/ABSPBT系列成型收缩率
名称及描述成型收缩率%备注10%玻纤增强PBT0.8-1.2PBTG1015%玻纤增强PBT0.7-1.0PBTG1520%玻纤增强PBT0.4-0.7PBTG2025%玻纤增强PBT0.3-0.6PBTG2530%玻纤增强PBT0.3-0.5PBTG3050%玻纤增强PBT0.1-0.3PBTG5030%玻纤增强冲击改性PBT0.3-0.5PBTG3010%玻纤增强阻燃PBT0.7-0.9Z-PBTG1020%玻纤增强阻燃PBT0.4-0.6Z-PBTG2030%玻纤增强阻燃PBT0.3-0.5Z-PBTG30一般增韧PBT1.4-1.8PBT中等增韧PBT1.2-1.6PBT超增韧PBT1.0-1.5PBTPTFE一般耐磨改性PBT1.5-2.0PBT阻燃级PBT1.2-1.7Z-PBTABS系列成型收缩率影响塑料制品收缩率的因素
名称及描述成型收缩率%备注20%玻纤增强ABS0.2-0.4ABSG2025%玻纤增强ABS0.2-0.4ABSG2530%玻纤增强ABS0.1-0.3ABSG3020%玻纤增强阻燃ABS0.1-0.3Z-ABSG20一般阻燃级ABS0.4-0.7Z-ABS一般注塑级ABS0.4-0.7ABS耐侯级ABS0.4-0.7ABS
