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A 395/A 395M-99 for Ductile Iron Castings

Standard Specification for Ferrite Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures.

1. Scope 

This specification covers ductile iron castings for pressure-retaining parts for use at elevated temperatures. Castings of all grades are suitable for use up to 450 Fahrenheit. For temperatures above 450 Fahrenheit and up to 650 Fahrenheit, only Grade 60-40-18 castings are suitable (Note 1). 

Valves, flanges, pipe fittings, pumps, and other piping components are generally manufactured in advance and supplied from stock by the manufacturer, jobber, or dealer. 

Table 1 Mechanical property requirements 

Property

Grade 60-40-18

Grade 65-45-15

Tensile strength minimum, psi [MPa]

60 000[415]

65 000[450]

Yield strength minimum, psi [MPa]

40 000[275]

45 000[310]

Elongation in 2 in, minimum, %

18

15

Hardness HB, 3000 kgf Load

143-187

156-201

2. Chemical requirements 

The casting shall conform to the following, requirements for chemical composition (Note 2):

Total carbon, min, %

3.00

Silicon, max, %

2.50

Phosphorus, max, %

0.08

3 Workmanship and finish 

The surface of the casting shall be examined visually and shall be free from adhering sand, scale, cracks, and hot tears. Any other surface discontinuities shall meet visual acceptance standards specified in the order. 

4. Repair 

Castings for valves, flanges, pipe fittings, pumps, and other piping components ordered under applicable ANSI standards shall not be repaired by plugging, welding, brazing, or impregnation.

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