ASTM Grade

UNS

C

Mn

Si

S

P

Condition

 A 27 gr N-1

J02500

0.25^a

0.75^a

0.80

0.06

0.05

Chemical analysis only

 A 27 gr N-2

J03500

0.35^a

0.60^a

0.80

0.06

0.05

Heat treated but not mechanically tested.

 A 27 gr U60-30

J02500

0.25^a

0.75^a

0.80

0.06

0.05

Mechanically tested but not heat t

 A 27 gr 60-30

J03000

0.30a

0.60^a

0.80

0.06

0.05

Heat treated and mechanically tested.

 A 27 gr 65-35

J03001

0.30^a

0.70^a

0.80

0.06

0.05

Heat treated and mechanically tested.

 A 27 gr 70-36

J03501

0.35^a

0.70^a

0.80

0.06

0.05

Heat treated and mechanically tested.

 A 27 gr 70-40

J02501

0^a.25

1.20^a

0.80

0.06

0.05

Heat treated and mechanically tested.

 a. For each reduction 0f 0.10 % C below the max. specified, an increase 0f 0.04 % Mn above the max. specified is permitted, see ASTM A 27.

 Single values are maximums, unless otherwise specified.

 ASTM Grade

C

Mn

Si

S

P

Condition

 A 148 gr 80-40

^a

^a

^a

0.06

0.05

Composition and heat treatment necessary to achieve

specified mechanical properties

 A 148 gr 80-50

^a

^a

^a

0.06

0.05

Composition and heat treatment necessary to achieve

specified mechanical properties

 A 148 gr 90-60

^a

^a

^a

0.06

0.05

Composition and heat treatment necessary to achieve

specified mechanical properties

 A 148 gr 105-85

^a

^a

^a

0.06

0.05

Composition and heat treatment necessary to achieve

specified mechanical properties

 a. If not specified by the purchaser and agreed to by the manufacturer, the manufacturer may select the C, Mn, Si and alloying elements

 contents to obtain the required mechanical properties. Single values are maximums, unless otherwise specified.

 ASTM Grade

UNS

C

Mn

Si

S

P

Application

 A 352 gr LCA^b

J02504

0.25

0.70^a

0.60

0.045

0.04

Low temperature applications.

 A 352 gr LCB^b

J03003

0.30

1.00^a

0.60

0.045

0.04

Low temperature applications.

 A 352 gr LCC

J02505

0.25

1.20^a

0.60

0.045

0.04

Low temperature applications.

 A 356 gr 1

0.35

0.70^a

0.60

0.030

0.035

Castings for valve chests, throttle valves and other

heavy walled components for steam turbines.

 A 757 gr A1Q^c

---

0.30

1.00

0.60

0.025

0.025

Castings for pressure containing applications at

low temperatures.

 A 757 gr A2Q

J02503

0.25

1.20^d

0.60

0.025

0.025

Castings for pressure-containing applications at

low temperatures.

 a. For each reduction of 0.10 % C below the max. specified, an increase of 0.04 % Mn above max. specified is permitted, up to a

 maximum of 1.10 % for LCA, 1.28 % for LCB, 1.40 % for LCC and 1.00 % for A 356 gr. 1.

 b. Specified maximum residual elements are 0.30 % Cu, 0.50 % Ni, 0.50 % Cr, 0.20 % Mo and 0.03 % V, with total residual elements not

 exceeding 1.00 %.

 c. Specified maximum residual elements are 0.50 % Cu, 0.50 % Ni, 0.40 % Cr, 0.25 % Mo and 0.03 % V, with total residual elements not

 exceeding 1.00 %

 d. For each reduction of 0.10 % C below the max. specified, an increase of 0.04 % Mn above the max. specified is permitted, up to 1.40 %.

 Single values are maximums, unless otherwise specified.

 ASTM Grade

UNS

C

Mn

Si

S

P

Application

 A 216 gr WCA

J02502

0.25

0.70^a

0.60

b

Pressure-containing parts.