David L. Ellis Company, Inc.

Highlights ASTM E10 and E18 2007a

Expected release date 15 June 2007

Members of ASTM, who receive Volume 3, should receive these documents on the next CD or book. Also, members can go online a use “My Volume” in the members section after logging in where all new documents can be received at no extra charge (if you choose Volume 3, you can get all new documents in that volume all year round).

Brinell E10-07a

Do not confuse with E10-07 released earlier this year!

There are 4 mandatory Annexes and 2 Appendixes

Look at sections below in the document for further explanation. Below are highlights to inform the user where to look.

5.2.3 There are 4 indenter balls; 1, 2.5, 5, 10mm –all are CARBIDE (W)

5.2.5 Measurement devices (microscopes) - there are now two classes; Type A and Type B. Type B (handheld) is the lower class meeting only the 0.05mm resolution. It does not meet the requirement of measuring indents using the 1mm and 2.5mm balls.

9.1.3 Here there is a statement about which device (A or B) was used to measure the indent during the report. If no statement is given, then it is assumed a Type B was used.

9.1.4 A temperature of 50-90 deg F must be reported during the test. If outside that range, it should be shown why the temperature has no affect on the test.

A1.2.2 the device reporting the temperature (except calibrating test blocks; which is more restrictive) must be accurate within +/- 3.6 deg F (2 deg C)

A1.4 Indirect verification as follows;

Must verify tester for each ball sized used
Must verify tester for each force used

Minimum requirement using ball/force listed in Table 3

One test block used for one force or one ball. One high and one low hardness at the same ball/force combination. Minimum 3 blocks used. Example 200 HBW 10/3000, 400 HBW 10/3000 and one 100 HBW 10/500.

Another block must be used for another force such as 1000 kgf.

A1.4 must report As-found conditions

A1.4.6.2 E10 now requires a reference indent to be measured during verification.

A1.5 Daily verification required. While no report is required in the document, the user must demonstrate that a daily verification was performed.

Table A1.6 Requirements of tester verification reports- A2

Serial number of model – Blocks, indenter, machine and readout
Type A or B
Temperature
Uncertainty of the measurement
Maintenance performed
Accreditation of agency performing verification

Daily not required in report but must maintain information in inter-company reports

A2.6 standardizing hardness testers

Maintain temperature at more restrictively
Must perform direct verification on the tester
Must use monitoring test blocks
Must verify test cycles

A3.3.1 Standards for balls used including geometry, chemical, hardness

A4 Hardness test blocks

A4.5.6 Reference indentation on the test block required that can assist the user while verifying the indentation measuring system.

A4.7 Brinell test block certificate added requirements

Accreditation body and certificate number
Expiration date on test blocks – 5 years
Location of the reference indentation

Rockwell E18-07

All statements using the term “Superficial” have been removed and is in more agreement with ISO 6508 and world users.

The new E10-07 has a new structure with 6 mandatory annexes and appendixes which are non-mandatory.

There are only two types of indenters allowed; diamond and carbide. The use of a steel ball by customer agreement was eliminated in this version of the document and can only be used for A623 an A623M type testing on very thin materials. Those using a steel ball for other purposes will not be meeting ASTM E18-07!!!!!

There are test cycles listed in the document. Rockwell test blocks must meet tighter requirements.

A1.2.2 The temperature during the verification must be met and recorded on a device accurate to +/- 3.5 deg F (2.0 deg C).

A1.3 Direct verification required if tester can not be verified indirectly by test blocks.

A1.4 Indirect verification

Must verify each scale used; example HRA, HRB, HRC, HR15T
Customer can not use scales not verified!!

A1.5 Daily verification required each used.

A1.4.7 As found verification required

A1.4.10 Table A1.1 changed requirements for indenters.

A1.6.4 Verification reports changed

A1.6.4 Daily verification must be performed but reporting is up to customer.

A2.2 Verification agency must be accredited.

Table A2.1 New requirements for standardizing testers which produce hardness test blocks.

A2.4 New requirements for the environment of the laboratory which has a standardizing tester.

A2.5 standardizing testers must be directly verified every twelve months.

A2.7 standardizing testers must be monitored during use with monitoring test blocks.

A3 New requirements for Rockwell indenters.

A3.1.2 and A3.1.3 Classes of Rockwell indenters

Type A –Standardizing indenters for manufacturing of test blocks and calibration of testers.

Type B- Indenters for everyday use.

A3.2 Indenters must be verified by accredited agency

A3.4.2 One piece ball indenters allowed.

A3.4.4 Ball holder requirements

Ball holder hardness 25 HRC min
Protrusion of the ball at a minimum of 0.3 mm out the ball holder.

A3.4.5 Ball requirements listed

A3 Rockwell diamond indenter requirements

A3.8 All indenters must have a serial number

A3.9 all ball, ball holders to have a certificate

A4.2 Rockwell test block certificates must show in addition to previous editions;

Uncertainty of the calibration.
Test cycle times
Traceablity of measurements
Expiration date 5 years from calibration