Material

JVK is manufacturing moulded parts up to a weight of around 1 to made out of
thermoplastic material especially Polypropylene (PP), Polyvinylidenfluoride (PVDF),
Polyethylene (PE) and other materials e.g. aluminium.

Typical properties of
1. general materials
2. plates out of thermoplastic materials
3. membranes out of vulcanized and thermoplastic elastomeres

1. Properties of general materials

	name	resistance	not resistance	temperature [°C]
	name	resistance	not resistance	period	short
PEHM	polyethylene	acids, leaches, aliphatic hydrocarbon	extremely oxidising medium; aromatic and chlorinated hydrocarbon	-10 to +70	80
PEHM -V	polyethylene cross-linked	acids, leaches, aliphatic hydrocarbon	extremely oxidising medium; aromatic and chlorinated hydrocarbon	-20 to +80	90
PPH	polypropylene homopolymere	acids, leaches, aliphatic hydrocarbon	extremely oxidising medium; aromatic and chlorinated hydrocarbon	+10 to +90	90
PPC	polypropylene copolymere	acids, leaches, aliphatic hydrocarbon	extremely oxidising medium; aromatic and chlorinated hydrocarbon	-10 to +70	80
PP- GT	polypropylene for increased temperature	acids, leaches, aliphatic hydrocarbon	extremely oxidising medium; aromatic and chlorinated hydrocarbon	+20 to +110	120
PVDF	polyvinyliden- flourid	acids, aromatic hydrocarbon	concentrated leaches, concentrated oxidising acids	-10 to +140	150
SS	stainless steel	oils, grease, aliphatic and aromatic hydrocarbons, diluted leaches and acids	concentrated leaches and acids	-20 to +300	300
St-B	coated steel	Depending on coating	depending on coating	up to 100	up to 110
GGG	ductile iron	oils, grease, aliphatic and aromatic hydrocarbons	acids, leaches	-20 to +300	300
GGG -B	coated ductile iron	Depending on coating	depending on coating	up to 100	up to 110
AL	aluminium	oils, grease, aliphatic and aromatic hydrocarbons	acids, leaches oxidising agents	-20 to +200	200

2. Properties of plates: thermoplastic materials

Property Plates	Test DIN/ISO	Unit	PEHM	PPH	PPC	PVDF
Density at 23° C	1183	g/cm³	0,92-0,95	0,90-0,92	0,90-0,92	1,76-1,78
Melt flow index MFI 230°C/ 2,16 kg	1133	g/10 min	0,10-0,15	0,25-0,35	0,20-0,35	< 3,0
Tensile modulus	527	N/mm²	1200- 1350	1100- 1500	950- 1300	1800- 2000
Tensile strength at yield	527	N/mm²	27-28	28-33	22-28	50-52
Elongation at yield	527	%	9-11	10-14	12-16	9-11
Impact strength Charpy at 23°C	179	kJ/m²	10-12	10-50	40-70	8-14
Thermal conductivity	52612	Wm^-1K^-1	0,38- 0,41	0,20- 0,22	0,20- 0,22	0,15- 0,17
Thermal expansion	53752	10^-4K^-1	1,3-2,0	1,2-1,4	1,2-1,4	1,0-1,2
Temperature range		°C	10/ +70	+15/ +110	-10/ +70	-20/ +130

3. Properties of membranes: vulcanized and thermoplastic elastomeres

Property Membranes	Test DIN/ISO	Unit	EPDM	NBR	TPV	FKM
Hardness	53505	ShA	65-75	70-80	70-90	70-75
Density at 23° C	1183	g/cm³	1,1-1,2	1,2-1,3	0,93- 0,97	1,8-2,0
Tensile Strength	53504	N/mm²	10-16	15-20	8,5- 15,5	12-17
Elongation at break	53504	%	400- 600	250- 450	400- 700	150- 200
Tear Strength	34-2	N	25-30	45-60		20-25
Compression set at 24h/ 70°C / 25%	815	%	18-30	15-30	26-50	9-11
Thermal conductivity	52612	Wm^-1K^-1	0,30-0,35	0,30-0,35	0,30-0,35	0,20-0,25
Temperature range		°C	-30/ +120	-20/ +100	-20/ +80	-20/ + 180

Please note that these are recommended standard values only which might vary depending on the specific application. I.e. the maximum allowable filtration temperature amongst others depends on filtration pressure, chemical composition of the slurry, cycle time, choice of materials etc.
Our qualified expert team will assist you anytime in determining the right materials for your specific application.