SA 105

SA 105 Grades

SA 105

TABLE 1 : CHEMICAL REQUIREMENTS

Element Composition, %
Carbon 0.35 max
Manganese 0.60-1.05
Phosphorus, max 0.035 max.
Sulfur, max 0.040
Silicon 0.10-0.35
Copper 0.40 max. [Note (1)1
Nickel 0.40 max. [Note (1)]
Chromium 0.30 max. [Notes (1), (2)]
Molybdenum 0.12 max. [Notes (1), (2)]
Vanadium 0.12 max. [Notes (1), (2)]

GENERAL NOTE: For each reduction of 0.01% below the specified carbon maximum (0.35%), an increase of 0.06% manganese above the specified maximum (1.05%) will be permitted up to a maximum of 1.35%.

 

TABLE 2 : MEHANICAL REQUIREMENTS

Tensile strength, min., psi CM Pal 70 000 (485)
Yield strength, min., psi CMPal [Note (2)] 36 000 (250)
Elongation in 2 in. or 50 mm, min., %:  
Basic minimum elongation for walls 5/16 in. [7.9 mm] and over in thickness, strip tests. 30
When standard round 2 in. or 50 mm gage length or smaller proportionally sized specimen with the gage length equal to 4D is used 22
For strip tests, a deduction for each 1/32 in.
[0.8 mm] decrease in wall thickness below 5/6 in. [7.9 mm] from the basic minimum elongation of the percentage points of Table 3
1.50 [Note (3)]
Reduction of area, min., % [Note (4)] 30
Hardness, HB, max. 187

NOTES:

(1)For small forgings, see 7.3.4.

(2)Determined by either the 0.2% offset method or the 0.5% extension under-load method.

(3)See Table 3 for computed minimum values.

(4)For round specimens only.