The material for the bitt is identified as an ASTM A27 steel casting. It will be welded to ABS Grade EH36 deck plate. We have weld procedures that we use based on material grouping. The problem is that neither the version of D1.1 I have (it is old) nor the latest version of B2.1 include A27. I would think it would be Group I.
ASTM A27 - Dandong FoundryASTM A27 / A27M-2000 for Steel Casting American ASTM standard and UNS system of carbon cast steel suitable for general purpose. This standard is useful for designers and steel foundries to inspect and control the physical properties and chemical components for steel castings .
The grades of steels covered here are:Grade N-1, Grade N-2, Grade U-60-30 [415-205], Grade 60-30 [415-205], Grade 65-35 [450-240], Grade 70-36 [485-250] and Grade 70-40 [485-275]. Except for Grades N-1 and U-60-30, all steel castings shall be heat-treated by full annealing, normalizing, normalizing and tempering, or quenching and tempering.
ASTM A27 Grade 70-36 Annealed, Normalized, Normalized Send us your request for ASTM A27 Grade 70-36 Annealed, Normalized, Normalized and Tempered, or Quenched and Tempered and we will get back to you soon. Ask a technical question Request a quotation. Suggested reading. ASTM A1018. ASTM A108 Carbon and Alloy Steel Bars. ASTM
ASTM A27 Spec for General Steel Castings Specification Nov 04, 2014 · Grade 70-40 C [485-275] A Specify Class 1 or Class 2 in addition to grade designation (see 9.2). B When ICI test bars are used in tensile testing as provided for in this specication, the gage length to reduced section diameter ratio shall be 4 to 1.
Chemical Composition, max (unless range is given), % Tensile Properties, min (unless range is given) Energy Value, ft.lbf; Specification Grade or Class
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Standard Practice for Steel Castings, Welding Material Description ASTM Specication Grades 1 Carbon steel (carbon less than 0.35 %, tensile strength less than or equal to 70 ksi [480 MPa]). A27/A27M all grades A216/A216M WCA, WCB A352/A352M LCB, LCA A356/A356M 1 A732/A732M 1A, 2A A757/A757M A1Q A958 SC 1020, SC 1025, SC 1030, CLASSES 65/35, 70/36
Nov 30, 2004 · I reviewed an older edition of ASTM A 27 Standard Specification for Steel Castings, Carbon, for General Applications. The chemical composition requirement for Grade 70-40 is as follows; C max - 0.25%. Mn max - 1.20%.ASTM A27 Grade 70-40 (485-275, J02501) Cast Carbon Steel ASTM A27 Grade 70-40 (485-275, J02501) Cast Carbon Steel ASTM A27 grade 70-40 is a type of ASTM A27 cast steel. Cited properties are appropriate for the normalized condition. It has the second highest strength compared to the other variants of ASTM A27 cast steel.