ASTM A352 Grade LCC

STANDARDASTM A352FORMCastingUNSJ02505ASMESA-352 LCC

Impact-tested low-temperature carbon steel casting with higher strength than LCB. The standard body material for LPG, refrigeration and arctic oil and gas plants.

Rp0.2 · MPa: ≥ 275
Rm · MPa: 485–655
TEMPERATURE: −46 … +343 °C
COST

Representative sample of LCC: machined top face and as-cast side — REPRESENTATIVE IMAGE

Chemical composition

C≤ 0.25

Si≤ 0.60

Mn≤ 1.20

P≤ 0.04

S≤ 0.045

Cu≤ 0.30

Ni≤ 0.50

Cr≤ 0.50

Mo≤ 0.20

V≤ 0.03

%, maximum (same limits as WCC).

Mechanical properties

STANDARD · CONDITION	Rp0.2 MPa	Rp1.0 MPa	Rm MPa	A %	KV J
ASTM A352 · LCC	275	—	485–655	22	Test at −46 °C

ASME B16.34 pressure-temperature ratings

CLASS · bar	−29 … 38 °C	100 °C	200 °C	300 °C	400 °C	500 °C
Class 150	19.8	17.7	13.8	10.2	6.5	2.8
Class 300	51.7	51.5	48.6	42.9	34.7	11.6
Class 600	103.4	103.0	97.2	85.7	69.4	23.2
Class 900	155.1	154.6	145.8	128.6	104.2	34.7
Class 1500	258.6	257.6	243.2	214.4	173.6	57.9
Class 2500	430.9	429.4	405.4	357.1	289.3	96.5

Standard class, bar. Material group: LCC. Greyed values are outside the material's service range (−46 … +343 °C). Flanged-end ratings end at 538 °C.

Service temperature

−46 °C+343 °C−200−1000100200300400500600700800

Same as LCB: down to −46 °C; not used above 343 °C.

This is the limit of the material itself. A valve's service temperature is usually set by the seal and seat materials; product pages give it for each seal option.

Physical properties and heat treatment

HEAT TREATMENT: Normalizing + tempering, or quenching + tempering.

Media suitability GENERAL TREND

Fresh water

Seawater

Steam

Hydrocarbons, oil

Dilute acid

Caustic

Air, gas

Low temperature

Emsal assessment. The final choice is made from corrosion tables, taking concentration, temperature, chloride content and flow velocity into account.

Strengths and weaknesses

Strengths

Impact guarantee at −46 °C and WCC-level strength
Economical

Weaknesses

Not used above 343 °C
No corrosion resistance

Manufacturing and use

ECONOMY: Low.
MANUFACTURING METHODS: Sand casting + heat treatment + impact testing
TYPICAL VALVE PARTS: Body · Bonnet

Surface protection

Wet paintIndustrial wet paint systemEmsal standard external protection
Epoxy powder coatingElectrostatic epoxy powder coating (oven-cured, FBE)Water lines, internal and external
GalvanizingHot-dip galvanizingSevere outdoor environments

Source: ASTM A352. Values compiled and verified by Emsal Vana; for binding values, refer to the current edition of the standard and the material certificate.