Allowable Stresses & Design Stress Intensity of ASTM A350 LF3

The maximum allowable stress values and design stress intensity values of ASTM A350/ ASME SA-350 LF3 are listed in ASME Boiler and Pressure Vessel Code Section II Part D Table 1A, Table 5A, and Table 2A, respectively.

Maximum Allowable Stresses

*Temp.	*M.A.S
40	138
65	138
100	138
125	138
150	138
200	138
250	138
300	133
325	128
350	122

*ASTM A350/ ASME SA-350 Gr. LF3, both Class 1 and Class 2, applicable to Section III Classes 2 & 3, Section VIII Division 1, and Section XII.
*Temp.: metal temperature °C, not exceeding; *M.A.S: maximum allowable stress, MPa.
*All values are extracted from Table 1A.

*Temp.	*M.A.S
40	172
65	162
100	157
125	154
150	152
175	150
200	148
225	145
250	141
275	137
300	133
325	127
350	121

*ASTM A350/ ASME SA-350 Gr. LF3 applicable to Section VIII Division 2.
*Temp.: metal temperature °C, not exceeding; *M.A.S: maximum allowable stress, MPa.
*All values are extracted from Table 5A.

Design Stress Intensity

*Temp.	*Sm
40	161
65	160
100	157
125	155
150	152
200	148
250	142
300	133
325	128
350	122
375	116

*ASTM A350/ ASME SA-350 Gr. LF3 applicable to Section III Division 1 Classes 1 & MC, Section III Division 3 Classes TC & SC, and Section VIII Division 2 Class 1.
*Temp.: metal temperature °C, not exceeding; *S_m: design stress intensity, MPa.
*All values are extracted from Table 2A.