Test Method: SATRA TM48

Determination of grain crack index for sole leathers

August 1996

SCOPE

This method is intended to determine the propensity of the grain of a leather to crack during bending. The method is applicable to all sole leathers.

PRINCIPLE

A leather sample, of measured thickness, is bent around a series of numbered mandrels of decreasing diameter until either grain cracking occurs or the smallest mandrel has been used. Grain crack index is calculated by multiplying test piece thickness by mandrel number.

REFERENCES

BS 907: 1965 – Specification for dial gauges for linear measurement.

HISTORY

First issued September 1965 (Draft). Revised January 1996.

AVAILABILITY

This test method is available to members and non-members.

PRICE (ex. VAT)

This price is for a printed copy of the Test Method.

• Members: £75
• Non-members: £215

TYPE

• Flexing

USAGES

• Solings - leather