Item #

Characteristic

method

requirements

Specification

Quantity tested

1

Strip certificate:

2

chemistry of steel

supplier

SAE 1006/1008 grade

SAE J527/CAL103

per heat #

3

mechanical properties

supplier

30T scale: 35-45

CAL-103

per master coil

4

Copper thickness

supplier

2.5 - 3 microns

CAL-103

per master coil

5

Tubing certificate

6

Tube OD histogram

micrometer

Cpk = 1.33 minimum of tolerance range +/-0.07 mm

SAE J527

per mill#pallet

7

Wall thickness

micrometer

+/-0.07 mm

SAE J527

per mill#pallet

8

Coil Appearance

visual

no scratches, stains

SAE J527

per mill#pallet

9

Bevel height

transverse section

0.05 mm max

CAL-009

per mill#pallet

10

Overlap length

transverse section

> 0.64 mm

CAL-009

per mill#pallet

11

Braze joint integrity

transverse section

no porosity at the bevel

CAL-009

per mill#pallet

12

Tensile Strength

tensile test

290 Mpa

SAE J527

per mill#/Master Coil

13

Elongation in 2 inch gage length

tensile test

4.75 mm (3/16") O.D.: 17% minimum

CAL-009

per mill#/Master Coil

6.35 mm O.D.(1/4") : 21% minimum

CAL-009

per mill#/Master Coil

7.9 mm (5/16") O.D.: 25% minimum

CAL-009

per mill#/Master Coil

14

Flaring test

press

35% minimum expansion with no flaws or cracks

CAL-009

per mill#/Master Coil

15

Flattening test

Vice

no flaws or cracks at the seam

SAE J527/J1677

per mill#/Master Coil

16

Burst test

Burst tester

4.75 mm (3/16") O.D.: 110 MPa minimum

CAL-009

per mill#/Master Coil

6.35 mm O.D.(1/4") : 82.8 MPa minimum

CAL-009

per mill#/Master Coil

7.9 mm (5/16") O.D.: 75.9 MPa minimum

CAL-009

per mill#/Master Coil

17

Cleanliness test

Solvent, Analytical balance

0.2 gram/m 2 maximum; with no dark carbon deposit

CAL-009

per mill#pallet

18

Non-Destructive Test

Eddy Current Tester

No Braze Inconsistencies. No Holes. No Cracks

SAEJ527/ SAEJ1737

100%