ASTM A193 B7

ASTM A193 Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service Grade: B7  — Ferritic Steels / Chromium-Molybdenum Chemical Requirements (Composition, percent) C: 0.38-0.48 Mn: 0.75-1.00 P: ≤0.035 S: ≤0.040 Si: 0.15-0.35 Cr: 0.80-1.10 Mo: 0.15-0.25 *For bar sizes over 3-1/2 in. [90 mm], inclusive, the carbon content may be 0.50 %, max.…

ASTM A193

ASTM A193 Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service ASTM A193 covers alloy and stainless steel bolting material for pressure vessels, valves, flanges, and fittings for high-temperature service.The term bolting material as used in this specification covers bars, bolts, screws, studs, stud bolts, and wire. Bars and wire shall be hot-wrought. The material may…