Particle Count Materials


These SRMs are suitable for use with particle sizing instrumentation, including optical counters, in accordance with National Fluid Power Association (NFPA) T2.9.6 R2-1998 and ISO/DIS 11171. SRM Description


2806a Medium Test Dust in Hydraulic Fluid RM 8631a Medium Test Dust RM 8632 Ultrafine Test Dust


Particle Concentration 2.8 mg/L


1 µm to 50 µm 1 µm to 20 µm


Unit Size 400 mL


20 g 20 g


S U R F A C E F I N I S H


Abrasive Wear This SRM is suitable for use with ASTM G 65, Procedure A.


SRM Description 1857 D-2 Tool Steel


Unit Size


2 blocks: 0.78 cm 


2.5 cm  7.6 cm


Surface Roughness Unit Size: 25 mm  34 mm  12 mm


These SRMs are used for calibrating stylus instruments that measure surface roughness. These electroless-nickel coated steel blocks have a sinusoidal roughness profile machined on the top surface. SRM


Description


2071b 2072


2073a 2074 2075


Sinusoidal Roughness Sinusoidal Roughness Sinusoidal Roughness Sinusoidal Roughness Sinusoidal Roughness


F I R E R E S E A R C H


Surface Flammability This SRM is suitable for checking the operation of radiant panel test equipment in accordance with ASTM E 162-78.


SRM Description 1002d Hardboard Sheet Certification


Flame Spread Index, I = 203 Heat Evolution Factor, Q = 42.0


Unit Size (cm) 4 sheets:


15.2  45.7  0.6 WWW.NIST.GOV/SRM  PHONE: (301) 975-2200  FAX: (301) 948-3730  EMAIL: SRMINFO@NIST.GOV 3


Roughness, Ra (µm)


0.3


3 1 1


Wavelength, D (µm)


100


100 40


800


ENGINEERINGMATERIALS


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