ASTM A352 Chemical Composition, Mechanical Properties

ASTM A352 specifies the chemical composition and mechanical properties of ASTM A352 materials, including ASTM A352 LCA, LCB, LCC, LC1, LC2, LC3, LC4, LC9, and CA6NM.

ASTM A352 covers steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service.


ASTM A352 Chemical Composition

Material Grade
UNS
Type
Composition, %
Carbon Manganese Phosphorus Sulfur Silicon Nickel Chromium Molybdenum Copper Vanadium
LCAC
J02504
Carbon Steel
0.25 0.70 0.04 0.045 0.60 0.50D 0.50D 0.20 0.30 0.03D
LCBC
J03003
Carbon Steel
0.30 1.00 0.04 0.045 0.60 0.50D 0.50D 0.20D 0.30D 0.03D
LCCC
J02505
C-Mn Steel
0.25 1.20 0.04 0.045 0.60 0.50D 0.50D 0.20D 0.30D 0.03D
LC1
J12522
C-Mo Steel
0.25 0.50-0.80 0.04 0.045 0.60 ... ... 0.45-0.65 ... ...
LC2
J22500
2.5Ni Steel
0.25 0.50-0.80 0.04 0.045 0.60 2.00-3.00 ... ... ... ...
LC2-1
J42215
Ni-Cr-Mo Steel
0.22 0.55-0.75 0.04 0.045 0.50 2.50-3.50 1.35-1.85 0.30-0.60 ... ...
LC3
J31550
3.5Ni Steel
0.15 0.50-0.80 0.04 0.045 0.60 3.00-4.00 ... ... ... ...
LC4
J41500
4.5Ni Steel
0.15 0.50-0.80 0.04 0.045 0.60 4.00-5.00 ... ... ... ...
LC9
J31300
9Ni Steel
0.13 0.90 0.04 0.045 0.45 8.50-10.0 0.50 0.20 0.30 0.03
CA6NM
J91540
12.5Cr-Ni-Mo Steel
0.06 1.00 0.04 0.03 1.00 3.5-4.5 11.5-14.0 0.4-1.0 ... ...

A All values are maximums unless a range is provided.
B Where “. . .” appears in this table, there is no requirement, and the element need not be analyzed for or reported.
C For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted up to a maximum of 1.10 % for LCA, 1.28 % for LCB, and 1.40 % for LCC.
D Specified Residual Elements—The total content of these elements is 1.00 % maximum.
 

ASTM A352 Mechanical Properties

Material Grade Tensile RequirementsA,B Impact Requirements Charpy V-NotchB,E
  Tensile Strength, ksi [MPa] Yield Strength,C ksi [MPa] Elongation
in 2 in.
[50 mm], %D
Reduction of Area, % Minimum energy
value for two specimens and minimum average of three specimens, ftJbf[J]
Minimum energy value for single specimen, ft.lbf[J] Testing Temperature, °F [°C]
LCA
J02504 Carbon Steel
60.0-85.0
[415-585]
30.0 [205] 24 35 13 [18] 10 [14] -25 [-32]
LCB
J03003 Carbon Steel
65.0-90.0
[450-620]
35.0 [240] 24 35 13 [18] 10 [14] -50 [-46]
LCC
J02505
C-Mn Steel
70.0-95.0
[485-655]
40.0 [275] 22 35 15 [20] 12 [16] -50 [-46]
LC1
J12522
C-Mo Steel
65.0-90.0
[450-620]
35.0 [240] 24 35 13 [18] 10 [14] -75 [-59]
LC2
J22500
2.5Ni Steel
70.0-95.0
[485-655]
40.0 [275] 24 35 15 [20] 12 [16] -100 [-73]
LC2-1
J42215
Ni-Cr-Mo Steel
105.0-130.0
[725-895]
80.0 [550] 18 30 30 [41] 25 [34] -100 [-73]
LC3
J31550
3.5Ni Steel
70.0-95.0
[485-655]
40.0 [275] 24 35 15 [20] 12 [16] -150 [-101]
LC4
J41500
4.5Ni Steel
70.0-95.0
[485-655]
40.0 [275] 24 35 15 [20] 12 [16] -175 [-115]
LC9
J31300
9Ni Steel
85.0 [585] 75.0 [515] 20 30 20 [27] 15 [20] -320 [-196]
CA6NM
J91540
12.5Cr-Ni-Mo Steel
110.0-135.0
[760-930]
80.0 [550] 15 35 20 [27] 15 [20] -100 [-73]

A All values are minimums unless a range is provided.
B See 1.2. C Determine by either 0.2 % offset method or 0.5 % extension-under-load method.
D When ICI test bars are used in tensile testing as provided for in Specification A703/A703M, the gage length to reduced section diameter ratio shall be 4 to 1.
E See Appendix X1. 


Pressure Temperature Rating

ASTM A352 Gr. LCB (2), A352 Gr. LC1 (2), A217 Gr. WC1 (6)–(8) 

Standard Class

Temperature,°F Working Pressures by Class, psig
150 300 600 900 1500 2500 4500
-20 to 100 265 695 1,395 2,090 3,480 5,805 10,445
200 255 660 1,320 1,980 3,300 5,505 9,905
300 230 640 1,275 1,915 3,190 5,315 9,565
400 200 615 1,230 1,845 3,075 5,125 9,225
500 170 585 1,175 1,760 2,930 4,885 8,795
600 140 550 1,105 1,655 2,755 4,595 8,270
650 125 535 1,065 1,600 2,665 4,440 7,990
700 110 510 1,025 1,535 2,560 4,270 7,685
750 95 475 955 1,430 2,385 3,970 7,150
800 80 390 780 1,175 1,955 3,255 5,865
850 65 300 595 895 1,490 2,485 4,475
900 50 200 405 605 1,010 1,685 3,035
950 35 135 275 410 685 1,145 2,055
1,000 20 85 170 255 430 715 1,285

NOTES:
(1) Upon prolonged exposure to temperatures above 800°F, the carbide phase of steel may be converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
(2) Only killed steel shall be used above 850°F.
(3) Not to be used over 700°F.
(4) Not to be used over 850°F.
(5) Not to be used over 500°F.
(6) Not to be used over 650°F.

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