AWS D8.9 : 1997

Personnel
Foreword
List of tables
List of figures
1 Introduction
1.1 Scope
1.2 Safety precautions
1.3 Standard units of measurement
2 Terms and definitions
3 Sample preparation
3.1 Coupon sizes
3.2 Total sheet quantity requirements
3.3 Rolling direction (RD) orientation
3.4 Shearing details
3.5 Surface preparation
3.6 Sample randomization
4 Material characterization
4.1 Sheet identification
4.2 Sheet thickness
4.3 Coating weight
4.4 Coating composition
4.5 Substrate composition
4.6 Mechanical properties
4.7 Surface roughness
5 Welding parameters
5.1 Electrode specifications
5.2 Welding variables
5.3 Electrode cooling
5.4 Weld spacing and overlap
5.5 Sample orientation and sequencing
5.6 Surface orientation (coated sheet steels only)
5.7 Weld-button criteria
6 Preferred test equipment
6.1 Welding machine
6.2 Current/weld time meter
6.3 Force gage
6.4 Electrode cooling
6.5 Weld counter
6.6 Calipers
6.7 Tip-dressing file
6.8 Tip-dressing emery paper
6.9 Carbon paper
6.10 Tip-imprint paper
6.11 Electrode cooling tubes
7 Electrode installation and dressing procedure
7.1 Electrode installation
7.2 Electrode dressing
8 Electrode-Face and Weld-Size Stabilization Procedure
8.1 Introduction and overview
8.2 Preparation
8.3 Stabilization procedure
9 Endurance test
9.1 Introduction and overview
9.2 Test preparation
9.3 Initial IMIN current determination
9.4 Initial IMAX current determination
9.5 Endurance tests
9.6 Final IMIN current determination
9.7 Final IMAX current determination
9.8 Replication
9.9 Calculations for mean current levels and current ranges
9.10 Test report
10 Weld property tests
10.1 Introduction and overview
10.2 Test preparation
10.3 IMIN current determination
10.4 IMAX current determination
10.5 Hold-time sensitivity (HTS) test
10.6 Shear and cross tension tests
10.7 Replication
10.8 Test report
Annex A - Electrodes
A1 Electrode geometry
A2 Electrode composition and properties
Annex B - Data Forms
B1 Welding data sheet (form B-1)
B2 Tip imprint data sheet (form B-2)
B3 Test material data sheet (form B-3)
B4 Endurance test report (form B-4)
B5 Weld property test report (form B-5)
Annex C - Optional Endurance Test Panel
C1 Panel preparation
C2 Panel welding
Document list
List of Tables
Figure
1 Coupon dimensions and estimated material requirements
      (Endurance test)
2 Coupon dimensions and estimated material requirements
      (Weld Property Tests)
3 Welding parameters
4 Weld locations, spacings and overlap dimensions for
      peel-test samples
5 Weld spacing and edge distances for endurance test
      and electrode conditioning panel samples
6 Default initial welding currents
7 Conditions/combinations for Hold-Time sensitivity (HTS)
      tests
8 Conditions/combinations for shear and cross tension tests
9 Shear tension sample dimensions
10 Cross tension sample dimensions
A1 Electrode specifications and dimensions
C1 Coupon dimensions, weld spacing, and edge distances for
      optional panels

Specifies several standardized test methods that are designed for evaluating the resistance spot welding behavior of coated and uncoated sheet steels in laboratory environment.