Accession Number:

AD0404248

Title:

MATERIAL - WELDING ELECTRODES - P+H BA91 (HARNISCHFEGER CORPORATION) WELD STRENGTH AFTER HEAT TREATMENT

Descriptive Note:

Corporate Author:

GENERAL DYNAMICS SAN DIEGO CA CONVAIR DIV

Personal Author(s):

Report Date:

1958-05-01

Pagination or Media Count:

11.0

Abstract:

Single groove, vee-joint butt welds with a 18 in. root spacing were made in 18-in. thick, annealed 4340 steel using PH BA91 Harnischfeger Corporation welding electrodes for two pass, reverse polarity, DC welding. After welding the weldments were normalized 1600 F, 1-12 hr, air cool, austenitized 1550 F, 1-12 hr, oil quench and double tempered 800 F, 2 hr, air cool, 800 F, 2 hr, air cool. The ultimate strength of the heat treated parent material was 182.0 KS1, and of the welds 170.9 KSI 10 specimens. The weld efficiency thus was 94.

Subject Categories:

  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE