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TABLE OF CONTENTS
INTRODUCTION
SDI OVERVIEW 3
COMPANY HISTORY 4
PRODUCTS AND SERVICES 5
PROCESS DESCRIPTION AND CAPABILITIES 7
STEEL CHEMISTRIES
MAJOR STEEL GROUPS 11
AISI-SAE GRADE SERIES OVERVIEW 12
STANDARD CARBON STEELS 15
RESULFURIZED CARBON STEELS 16
REPHOSPHURIZED AND RESULFURIZED CARBON STEELS 16
HIGH MANGANESE CARBON STEELS 17
CARBON AND CARBON-BORON H-STEELS 17
CHEMICAL RANGES AND LIMITS OF CARBON STEELS 18
PERMISSIBLE VARIATIONS OF CARBON STEEL 19
STANDARD ALLOY STEELS 20
STANDARD ALLOY H-STEELS 24
STANDARD ALLOY RH-STEELS 29
SAE POTENTIAL STANDARD STEELS 31
FORMER SAE EX AND PS STEELS 33
FORMER STANDARD SAE STEELS 37
BEARING QUALITY STEELS 50
ASTM A105 55
ASTM A182 56
ASTM A193 58
ASTM A213 59
ASTM A350 61
ASTM A572 62
ASTM A588 63
ASTM A920 64
CHEMICAL RANGES AND LIMITS OF ALLOY STEELS 65
PERMISSIBLE VARIATIONS OF ALLOY STEELS 66
SELECT AEROSPACE SPECIFICATIONS 67
SELECT DIN SPECIFICATIONS 70
HARDENABILITY
STANDARD HARDENABILITY REQUIREMENTS 83
RESTRICTED HARDENABILITY REQUIREMENTS 107
SELECT DIN HARDENABILITY REQUIREMENTS 114
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