Yamamoto Standard Test Block for Hardness

Yamamoto Standard Test Block for Hardness

Category: Hardness Accessories Available
For more information, visit our official website at mspmetrology.com.my

Description

Yamamoto standard test block for hardness standardized to determine the average hardness of the block surface by MSP Metrology (M) Sdn Bhd from Yamamoto Japan


Features



To verify hardness tester to be in good working condition

To control various industrial hardness testers, it is important to verify all related factors, inculiding indenters, static and dynamic loads, indentation measurement, and sample pieces. Hardness blocks allow overall control of this coomplicated factors in the field. Therefore, it is imperative that a uniform surface hardness is displayed by all our test blocks, that the main factors of secular change are eliminated and, if possible, that the characteristic of their materials are similar to those of materials in practical use.

Material and manufacturing process

Yamamoto’s blocks are first cut from a plate material to avoid being affected by center segregation. After machining to the required shapes, heat treatment is carefully applied to the blocks to get a stable microstructure and the required hardness level.

After heat treatment is completed, the blocks are ground, lapped, and then undergo a thorough polishing process, followed by wet buffing to improve measuring precision and achieve the most accurate and consistent hardness available.

Yamamoto Metal Hardness Test Block has been manufactured since 1939 and maintained her reputation as the best in this field. The company received ISO 9001 Quality System certificate in 1997, issued by Japan Quality Assurance Organization (JQA).

 

1. Regular, Superficial and Special Blocks

2. High precision, precision hardness tolerance

3. Certified blocks traceable to NIST

4. Calibrated in accordance with ASTM E18-00 section C using NIST Rockwell HRC standard reference material

 


Specifications


Assortment Hardness Value Tolerance Calibration Number Variation (R=Max-Min) Materials (JIS Notation) Dimension (mm) Finished Surface Standard Based
HMV (1, 0.1) 1650 ±10% 4(2×2) 2% (HV1) Si3N4 Ø10×5 Super Finish JIS B 7735
HMV (1, 0.1, 0.01) 900, 800, 700, 600, 500 ±15 6(3×2) 5% (HV0.1) SK85 Ø25×6 Super Finish JIS B 7735
400, 300, 200 (Be Copper) ±15 C1720P Ø25×6 (2) Super Finish
100 (C2600P), 40 (C1020-) ±10 7(100HV0.1), 4(40HV0.1) Ø25×5, Ø25×6 Super Finish
HMV (0.1, 0.01, 0.001) 30 (AU) ±10 4(HV0.1) Au Ø25×5 (0.8) Super Finish
UMV (0.01, 0.002) 900, 700 (Berkovich 9.8mN tested) ±20% 6(3×2) 10% (HV0.01) SK85 Ø25×6 Super Finish (Fine) JIS B 7735
– (0.01, 0.002) 500, 200 (-) SK85, C1720P Ø25×6 (2) Super Finish (Fine)
*Nano Indentation Hardness Blocks APPROX340 6(3×2 HV, Nano)   Syngle Crystal Ø25×6 Super Finish (Fine) JIS B 7735
HN-W HV0.001     Tungsten (W:Ø9×6)    
(HV0.01, 0.001 Berkovich 9.8mN tested)              
HV (30, 1) 1000(SK120), 900, 800, 700 ±15 10(5×2)/HV30, 10 1.5% SKS3 Ø64×15 Buffing JIS B 7735
HV (10, 1) 600, 500, 400, 300, 200(SK85), 150(S45C) 6(3×2)/HV1 Buffing
100 (C2600P), 40(C1020P) ±10   (150HV and below 2.2% Ø64×10 Buffing
HS 100(SK120), 95,90,80,70, 60,50, 40, 30 ±2 HV10(5×2) VHS≤1.5(70HS and below 1.2) SK85 Ø64×15 Buffing JIS B 7731
20(S20C), 7(C1020PØ64×10) HS10(5×2) ∠HS(HS-VHS)≤0.5 Buffing
HL HLE(Dia)850, 800, 700, 600, 500 ±15 (HV Calibration)   SK85 Ø115×33 Buffing JIS B 7731
HLD(WC)880, 830, 730, 630, 520   Buffing Related
HRC 70(SK120), 67, 64, 62, 60 ±1 10(5×2) 0.2 SKS3 Ø64×15 Buffing JIS B 7730
57, 55, 50, 45, 40, 35, 30, 25, 20, 10 (40HRC and below 0.3) SK85 Buffing
HRA 87, 85, 83, 81, 78, 75, 71, 65, 56 0.3 Same as HRC Buffing
HR30N 83, 81, 78, 73M 67, 60, 55, 50, 41 0.6 Buffing
HR15N (45N) 92, 90, 87, 85, 80, 75 (43) (23) Buffing
HRBS 100, 95, 90 ±2 10(5×2) 0.8 SK85 Ø64×10 Plate Lapping JIS B 7730
82, 72, 62, 52, 42, 32 (50HRB and below 0.1) C2600P Plate Lapping
HR30T S 78, 72, 62, 52, 42, 38, 32 1.0 Same as HRB Buffing
HR15T S 87, 82, 78 Buffing
HR (E•M•L•R•F•S) HRE90 HRM107 HRL118 HRR123 HRF90 (100HV) Buffing JIS K 7202
HRM67 HRL92 HRR105 HRS90 (40HV) Buffing
HBW (10/3000) 600, 550, 500, 450, 400, 350 ±15 6(3×2) 1.5% SK85 Ø115×18 Fine Grinding JIS B 7736
300, 25, 229(d=4mm), 200, 180 Fine Grinding
  HBW(10/3000) 150, HBW(10/500) 125 2.5% S45C Fine Grinding
  HBW(10/500) 100 3% S10C Fine Grinding
HRC 67, 64, 62, 60 ±1 6(3×2)     Ø50.8×6.4   (ASTM E-18)
HRC 55, 50, 45, 40, 35, 30, 25, 20     (Ø2″x1/4″)  

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