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, %
Material Grade UNS Type	Carbon	Manganese	Phosphorus	Sulfur	Silicon Nickel		Chromium	Molybdenum	Copper	Vanadium
LCA^C J02504 Carbon Steel	0.25	0.70	0.04	0.045	0.60	0.50D	0.50^D	0.20	0.30	0.03^D
LCB^C J03003 Carbon Steel	0.30	1.00	0.04	0.045	0.60	0.50D	0.50^D	0.20^D	0.30^D	0.03^D
LCC^C J02505 C-Mn Steel	0.25	1.20	0.04	0.045	0.60	0.50D	0.50^D	0.20^D	0.30^D	0.03^D
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	...	...

^AAll 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.
^CFor 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 Requirements^A,B				Impact Requirements Charpy V-Notch^B,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
Temperature,°F	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.