Hardness Calibration Brochure

8/18/2019 Hardness Calibration Brochure

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We’re Not Just Another Calibration Provider

Instron provides the highest quality hardness testing

machines as well as the highest quality service inthe industry.

Wilson Instruments is the originator of the Rockwell®

hardness tester and has over 85 years of expertise.

Wilson was acquired by Instron in 1993, and the

Instron/Wilson combination cannot be equaled in the

industry. We have local experts to meet your calibration

and service needs across the U.S., Canada and Europe,

and are fully supported by engineering and production

staff from the factory. The average Instron/Wilson

serviceman has over 15 years experience.

Not only does Instron provide on-site service and

calibration for your hardness tester, but we also are:

h A full-line manufacturer of hardness testing products

h A premier hardness standards laboratory

h A large R+D organization specializing in strength and

hardness testing and metrology

Expert at Preventive Maintenanceand Repair to Factory Standards

Unlike most other service providers, we performin-depth preventive maintenance. This results in fewer

problems between visits and longer tester life. As part

of the preventive maintenance we include

disassembly as appropriate, cleaning, polishing,

lubricating and calibration to the tightest performance

standards in the world. All replacement parts used are

Instron/Wilson original factory parts, which meet or are

improved from the original equipment specifications.

Our Service Engineers are factory-trained with an

intensive in-house program and assessment. The staff

is regularly field audited to ensure high standards are

maintained. Experienced service engineers armed with

detailed knowledge of the history of your testing

machine enable us to optimize the performance and

life of your tester.

All Field Service Engineers are kept up-to-date on

relevant changes in product design and calibration

procedures through periodic technical bulletins and

ongoing training.

Having service performed by Instron/Wilson

ensures that your tester will meet all original factory

specifications. All accredited calibrations meet

applicable ASTM and ISO standards and conform

to ISO/IEC 17025 and ANSI Z540-1 (formerly

MIL-STD-45662).

Instron® /Wilson® has unmatched capability toensure your hardness data is accurate.

®


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The Wilson Hardness Lab, based in Norwood, MA, is accredited to ISO

17025 by NVLAP® (Lab Code 200301-0). NVLAP is administered by the

National Institute of Standards and Technolog y (NIST) in Washing ton, DC.

The Instron® /Wilson® HardnessStandards Lab

Our lab has capabilities normally found only in a

national standards lab. Our many years of experience

have resulted in a wide range of capability and

low uncertainties of measurement. The Wilson

Lab produces calibration sets for our field

calibration engineers that are of higher accuracythan calibration sets commercially available from

other vendors.

Standards Traceability

In North America calibration is performed using Wilson

Calibration Laboratory service sets and calibration set

penetrators. All calibrations are performed in

accordance with ASTM specifications. Calibration

standards used are either traceable to NIST SRM’s for

the HRC scale or traceable to hardness scales

originally developed by Stanley P. Rockwell and CharlesWilson circa 1920 for all other hardness scales. With

a proven history of maintaining a stable standard,

Wilson is uniquely qualified to trace to the new NIST

standards. By combining the NIST standards and the

Wilson historical standards, Wilson can provide the

most accurate and stable hardness standards

available. All other measurement devices used in the

calibration are traceable to NIST.

In Europe calibration is performed using calibration

sets traceable to the European National MeasurementInstitutions of IMGC (Italy) and NPL (UK) as well as

NIST (USA) for the Rockwell HRC scale and conform to

ISO and ASTM specifications as required.

Hardness Scale and Range ASTM E 18 Tolerance Instron Standard Tolerance Instron Field Service Tolerance Best Measurement Uncertainty*

25 HRC 1.0 0.8 0.5 .18 HRC

45 HRC 1.0 0.8 0.5 .18 HRC

63 HRC 0.5 0.5 0.3 .16 HRC

*Reported expanded measurement uncertainty is based on a standard uncertainty multiplied by a coverag e factor of K = 2 providing a level of confidence

approximately 95%.

Maximum Non-Uniformity Allowed on Standardized Hardness Test Blocks


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Comprehensive Capability

h Indirect verification

h Direct verification

h We verify most types and brands of hardness

testing machines

h Standardized test blocks that are traceable to NIST

h Calibration sets for our customers

h Standards level calibration sets for Instron® Field

Service Engineers

Other Key Advantages:

h We keep track of re-calibration dates, so we can

call ahead of time and schedule convenient and

timely re-calibrations

h Web access to your calibration certificates

is available through our Web Support

Agreement (WSA)

h Calibration certificates are internationally

recognized and accepted through the

ILAC agreement

h All of our personnel are fully insured

Backed Up By World Class Engineering

h Expertise in hardness testing and related issues

h Expertise in metrology and calibration

h Instron engineers actively participate in the

relevant ASTM and ISO committees that write

hardness standards

You will have the full backing of Wilson’s StandardsLaboratory and years of expertise. We will assist

you to resolve any hardness issues you may have

with your customers or suppliers. With Instron/Wilson

on your side, you will have the utmost confidence in

the accuracy of your hardness testing program.

Calibration staf f are factory-trained and regulary audited in the field.


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Instron® /Wilson® hardness calibrations and verifications

in the field are accredited to ISO 17025 by NVLAP®

(Lab Code: 200301-0). NVLAP is administered by the

National Institute of Standards and Technology (NIST).

Corporate Headquarters825 University Avenue Norwood, MA 02062-2643

Tel: +1 800 473 7838 or +1 781 575 5000 Fax: +1 781 575 5725

Instron Industrial Products900 Liberty Street, Grove City, PA 16127-9969, USA

Tel: +1 724 458 9610 or +1 800 7263 8378 Fax: +1 724 478 9614

Instron is a registered trademark of Instron Corporation. Other names, logos, icons and marks identifying Instro

products and services referenced herein are trademarks of Instron Corporation and may not be used without th

prior written permission of Instron. Other product and company names listed are trademarks or trade names of the

respective companies. Copyright © 2006 Instron Corporation. All rights reserved

All of the specifications shown in this brochure are subject to change without notice

WB1241

European HeadquartersCoronation Road, High Wycombe, Bucks HP12 3SY, United Kingdom

Tel: +44 1494 456815 Fax: +44 1494 456814

www.instron.com

Hardness Scale Traceability Standard Compliance

HRA Carbide CCPA (Cemented Carbide ASTM B 294

Producers Associat ion) ISO 3738-2

HRA Steel, HRB, Original Wilson ASTM E 18

HRD,HRE, HRF, HRG, Hardness Levels

HRH, HRK, HRL, HRM,

HR15N, HR30N,

HR45N, HRP, HRR,

HRS, HR15T, HR30T,

HR45T, HRV, HR15W,

HR30W, HR45W,

HR15X, HR30X,

HR45X, HR15Y,

HR30Y and HR45Y

HRC NIST Standard ASTM E 18

Reference Materials

Rockwell - Indirect Verification

Measured Quantity Traceability Standard Compliance

Force, Depth Measuring National Standards ASTM E 18

Device, Testing Time Cycle ASTM E 4

Machine Level and National Standards Internal Instron Procedure

Frame Stiffness

Rockwell - Direct Verification of

Series 2000 Testers

Brinell/Vickers/Micro-indentation -

Indirect Verification


Brinell Hardness Original Wilson ASTM E 10

Applied Forces: Hardness Levels

10 KGF to 3000 KGF

Ball Diameter:

1 mm to 10 mm

Vickers Hardness Original Wilson ASTM E 92

1 KGF to 120 KGF Hardness Levels

Knoop Micro-Indentation NIST Standard ASTM E 384

10 g to 1000 g Reference Materials

Vickers Micro-Indentation NIST Standard ASTM E 384

50 g to 1000 g Reference Materials


10X – 100X National Standards ASTM E 10

30X – 1000X National Standards ASTM E 92

ASTM E 384

Brinell/Vickers/Micro-indentation -

Microscope

Documents

Hardness Calibration Brochure