PTC®408B硬度計ASTM B型

測試適度硬橡膠，合成橡膠，紙制品，纖維材料的硬度

示范408B的B型硬度計是用來測量ASTM（美國試驗協會和材料）B型硬度。這包括材料如：橡膠，合成橡膠，和其它類似橡膠的材料包括氯丁橡膠，硅酮，乙烯基，和丁基。軟塑料，油氈，皮革及類似材料一般都屬于這一范圍相同。 PTC®的型號408B達到或超過目前ASTM D2240規格。準確的讀數可以在任何位置獲得。

PTC® 408B Durometer ASTM Type B 

Test the Hardness of Moderay Hard Rubber, Elastomers, Paper Products, Fibrous Materials 

The Model 408B Type B Durometer is designed to measure ASTM (American Society for Testing and Materials) Type B hardness. This includes materials such as: rubber, elastomers, and other rubber-like materials including neoprene, silicone, vinyl, and butyl. Soft plastics, felt, leather, and similar materials generally fall into this same range. PTC®'s Model 408B meets or exceeds current ASTM D2240 Specifications. Accurate readings can be obtained in any position. 

TYPE	PTC MODEL No.	MAIN SPRING TRAVEL	INDENTER DESCRIPTION	INDENTER IMAGE	APPLICATIONS
A ASTM D2240 JIS K6253 ISO 868	201 211 306L 408 501A 511A	821 gf 1.81 LB 0.100 inch travel	Truncated Cone 35° Included Angle		Soft rubber, elastomers, neoprene, silicone, vinyl, nitrile, and butyl,  soft plastics, felt, leather,  waxes, printing rollers  and similar materials
B ASTM D2240	201B  211B 306BL 408B 501B 511B	821 gf 1.81 LB 0.100 inch travel	Conical 30° Included Angle		Rubber, elastomers,  use when off the high end of the A scale
C ASTM D2240	202C 212C 307CL 409C 502C 512C	4.53 kgf 10 LB 0.100 inch travel	Truncated Cone 35° Included Angle		Medium hard rubber or plastics use when off the low end of the D scale
D ASTM D2240 JIS K6253 ISO 868	202 212 307L 409 502D 512D	4.53 kgf 10 LB 0.100 inch travel	Conical 30° Included Angle		Hard rubber, plastics, acrylic,  delrin, kevlar, pvc, nylon, lexan, epoxies and similar materials
DO ASTM D2240	202DO 212DO 413 502DO  512DO	4.53 kgf 10 LB 0.100 inch travel	3/32" Spherical Diameter (2.38mm)		Dense textile winding, medium printing rollers
E ASTM D2240	408E 501E 511E	821gf, 1.81 lbs 0.100 inch travel	0.200" Spherical Diameter (5.08mm)		Medium density textile windings, soft rubber, foamed elastomers,wound threads,yarn
O ASTM D2240	201/O 211/O 410 501/O  511/O	821gf, 1.81 lbs 0.100 inch travel	3/32" Spherical Diameter (2.38mm)		Soft printing rollers, textile windings
OO ASTM D2240	203 411 511/OO	113gf, 4.0 oz. 0.100 inch travel	3/32" Spherical Diameter (2.38mm)		Sponge rubber, very soft rubber
OOO ASTM D2240	412 412L	113gf, 4.0 oz. 0.100 inch travel	1/2" Spherical Diameter (12.7mm)		Very soft materials, (e.g.) open cell foam
SL FOAM RUBBER PTC STANDARD	302SL	142gf, 5.0 oz. 0.200 inch travel	1 cm2- Circular (0.155in2)		Foam and sponge rubber,  cellular and gel-like material
CF ASTM F1957-99	414CF	9.11kgf 20lbs 0.200 inch travel	.1/2" Spherical Diameter (12.7mm)		Composite Foam
Asker C SRIS-0101 JIS K7312	601 603 604 611	855gf, 1.89 lbs 0.100 inch travel	0.200" Spherical Diameter (5.08mm)		Medium density textile windings, soft rubber, foamed elastomers,  wound threads, yarn