Download ASTM A Designation: A − 71 (Reapproved ) Standard Speciﬁcation for. Gray Iron Castings for Elevated. ASTM A – Download as PDF File .pdf), Text File .txt) or read online. A – Download as PDF File .pdf), Text File .txt) or read online. Referenced Documents ASTM Standards: A 48 Speciﬁcation for Gray Iron Castings2 3.
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Your Aastm Profile lists the documents that will be monitored. When chromium is present as an alloying element, each class shall be subdivided into types designated as follows: Any combination of these alloying elements that assists in resisting oxidation or surface deterioration or in stabilizing the structure or retaining strength at elevated temperatures, may be used.
Some are suitable for long service at the lower temperatures only, unless low stresses are involved. Permission rights to photocopy the standard may also be secured from the ASTM website www.
Proceed to Checkout Continue Shopping. It is the intention of this specification to classify the irons in accordance with their carbon content equivalent, wherein the equation for its calculation is given herein.
ASTM A – Free Download PDF
Class I, possessing superior thermal shock resistance; Class II, possessing average thermal shock resistance and moderately good tensile strength; and Class III, possessing a higher tensile strength than either Classes I or II. Grate bars; Gray iron castings–specifications; Ingot molds; Metal melting pots; Oil still furnace parts; Stoker links; Caustic pots; Elevated temperature service applications; Firebox parts; Glass molds.
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Machinabilit Machinability ast, 5. Class I, possessing superior thermal shock resistance; Class II, possessing average thermal shock resistance and moderately good tensile strength; and Class III, possessing a higher tensile strength than either Classes I or II.
Historical Version s – view previous versions of standard. The maximum hardness at the locations on castings that are to be mac machi hine ned d sh shall all be a ma matte tterr of ag agre reem emen entt be betw twee een n th thee manufacturer and the purchaser. Chem Chemical asgm Compositio Composition n 6. Iron used in supplying castings shall conform to the required tensile strength.
Current edition approved March 1, Thank you for interesting in our services. This abstract is a brief summary of the referenced standard. Please help us to share our service with your friends. Chemical analysis shall be performed on each class of castings and shall meet the maximum requirement for carbon, phosphorus and sulfur. No further reproductions authorized. FORMAT Single User Subscription Asm License Subscription BOOKS All Books PACKAGES All Packages EDITION to PUBLISHER.
The test bars shall be cast in dried siliceous sand molds maintained at approximately room temperature. Tension test shall be performed on aatm lot and materials shall conform to the tensile requirements specified. It is the intention of this specification to x319 the irons in accordance with their carbon content equivalent, wherein the equation for its calculation is given herein. This standard is also available to be included in Standards Subscriptions.
This specification covers gray iron castings exposed to elevated temperatures for non-pressure containing parts such as grate bars, stoker links, stoker parts, oil still furnace parts, firebox parts, ingot molds, glass aetm, caustic pots, and metal melting pots.
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Separately cast test bars having the required dimensions shall be poured from the same lot as the castings represented. In other respects the castings shall conform to whatever points may be specially agreed upon between the manufacturer and the purchaser.
No items in cart. It is not intended intended to imp imply ly tha thatt all three cla classe ssess are suitable suitable throughout throug hout this entire temperature temperature range withou withoutt regar regard d to actual service stresses. Register for a trial account. The alloying elements, which, in addition to chromium, are commonly added to improve these properties, are copper, molybdenum, nickel, and vanadium. Please first verify your email before subscribing to alerts.
Land Use and Development. Please login to your authorized staff account to use this feature. It is not intended to imply that all three classes are suitable throughout this entire temperature range without regard to actual service stresses.
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