# What are the Contents of a Typical Characteristics Matrix?

#### Marc

##### Hunkered Down for the Duration
Staff member

piphat

----- Original Message -----
From: Marc Smith
Sent: Saturday, January 26, 2002 11:00 PM
Subject: Re: ARK QUESTION

On 1/26/02 7:46 AM, XXXXX wrote:

HI mARC
I SAW IN APQP MANUAL PAGE 82 CHARARACTERISTICS MATRIX (EXAMPLE). I WOULD TO KNOW
1 DIM NO. IT MEAN.
2 DESCRIPTION IT MEAN AND RELATION WITH ?
3 OPERATION NOS. 05 10 20 30 IT MEAN

PIPHAT

Can anyene help this person? I'm in the middle of a family emergency.

A

#### Al Dyer

PIPHAT Wrote:

"HI mARC
I SAW IN APQP MANUAL PAGE 82 CHARARACTERISTICS MATRIX (EXAMPLE). I WOULD TO KNOW
1 DIM NO. IT MEAN.
2 DESCRIPTION IT MEAN AND RELATION WITH ?
3 OPERATION NOS. 05 10 20 30 IT MEAN"
----------------------------------------------------------

1: Dimension number relates to the numbering scheme used to identify characteristics on a blueprint. Typically you start at the top left of the print and number each dimension in aclockwise manner until all characteristics are identified.

2: Description is the description of the characteristic. Say your first characteristic on the print is a diameter that you labelled #1, the descriiption would be "diameter". The relationship column identifies the relationship between the characteristic and other required documents. See Below:

Relationship "X" = The characteristic is included on the control plan.
Relationship "R" = The characteristic is for received material or parts that show on the process flow chart but not the control plan.
Relationship "P" = "Process" characteristics (as opposed to "Product" characteristics) that only appear on the control plan.

There are other relationships with different definitions.

3: Operation numbers are used to identify the consecutive steps in a process. This is some what open but here is an example:

Op 050 = Receiving
Op 100 = Storage of raw material
Op 200 = Move to Op 300
Op 400 = Grind
Op 500 = Inspect
Op 600 = Move to Op 700
Op 700 = Polish

Etc...........

The numbering system is really up to you as long as it is logical.

Hope this helps a bit.

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