|
Material Grades
ASTM A-193/ASME SA-193
Top 
|
|
|
|
|
| Grade |
B5 |
B6 |
B7/B7M |
B16 |
B8 |
B8M |
| C |
0.10
min |
0.15
max |
0.37-0.49 |
0.36-0.47 |
0.08
max |
0.08
max |
| Mn |
1.00
max |
1.00 max |
0.65-1.10 |
0.65-1.10 |
2.00 max |
2.00 max |
| P, max |
0.040 |
0.040 |
0.035 |
0.035 |
0.045 |
0.045 |
| S, max |
0.030 |
0.030 |
0.040 |
0.04 |
0.030 |
0.030 |
| Si |
1.00
max |
1.00
max |
0.15-0.35 |
0.15-0.35 |
1.00
max |
1.00
max |
| Ni |
- |
- |
- |
- |
8.00-10.50 |
10.00-14.00 |
| Cr |
4.00-6.00 |
11.50-13.50 |
0.75-1.20 |
0.80-1.15 |
18.00-20.00 |
18.00-18.00 |
| Mo |
0.40-0.65 |
- |
0.15-0.25 |
0.50-0.65 |
- |
2.00-3.00 |
| V |
- |
- |
- |
0.25-0.35 |
- |
- |
| Al, max |
- |
- |
- |
0.015 |
- |
- |
| ASTM A-320/ASME
SA-320 Top
|
|
|
|
|
|
| Grade |
L7/L7M |
L43 |
B8 |
B8M |
| C |
0.38-0.48 |
0.38-0.43 |
0.08 max |
0.08 max |
| Mn |
0.75-1.00 |
0.60-0.85 |
2.00
max |
2.00
max |
| P, max |
0.035 |
0.035 |
0.045 |
0.045 |
| S,
max |
0.040 |
0.040 |
0.030 |
0.030 |
| Si |
0.15-0.35 |
0.15-0.35 |
1.00 max |
1.00 max |
| Ni |
- |
1.65-2.00 |
8.00-10.50 |
10.00-14.00 |
| Cr |
0.80-1.10 |
0.70-0.90 |
18.00-20.00 |
16.00-18.00 |
| Mo |
0.15-0.25 |
0.20-0.30 |
- |
2.00-3.00 |
| ASTM A-194/ASME
SA-194 Top
|
| Grade |
2H/2HM |
3 |
4 |
6 |
7/7M |
8 |
8M |
| C |
0.40 min |
0.10 min |
0.40-0.50 |
0.15 max |
0.37-0.49 |
0.08 max |
0.08 max |
| Mn |
1.00 max |
1.00 max |
0.70-0.90 |
1.00 max |
0.65-1.10 |
2.00 max |
2.00 max |
| P, max |
0.040 |
0.040 |
0.035 |
0.040 |
0.040 |
0.045 |
0.045 |
| S, max |
0.050 |
0.030 |
0.040 |
0.030 |
0.040 |
0.030 |
0.030 |
| Si |
0.40 max |
1.00 max |
0.15-0.35 |
1.00 max |
0.15-0.35 |
1.00 max |
1.00 max |
| Ni |
- |
- |
- |
- |
- |
8.00-10.50 |
10.00-14.00 |
| Cr |
- |
4.00-6.00 |
- |
11.50-13.50 |
0.75-1.20 |
18.00-20.00 |
16.00-18.00 |
| Mo |
- |
0.40-0.65 |
0.20-0.30 |
- |
0.15-0.25 |
- |
2.00-3.00 |
| ASTM
A-320/ASME SA-320 Top
|
| Grade |
Heat Treatment |
Tensile Strength |
Yield Strength |
Elongation |
Reduction of Area |
Hardness |
| L7 |
Q/T* |
125 (860) |
105 (725) |
16 |
50 |
- |
| L43 |
Q/T* |
125 (860) |
105 (725) |
16 |
50 |
- |
| L7M |
- Q/T* at 1150 deg.
- F (620 deg. C) min.
|
100 (690) |
80 (550) |
18 |
50 |
235 HB (99 HRB)** |
|
* - Quenched and Tempered
|
|
|
|
|
|
** - In order
to meet the tensile requirements, the hardness shall be
no less than 200 HB or 93 HRB.
|
| ASTM A-194/ASME
SA-194 Top
|
| Grade |
Minimum Temp. |
Brinell Hardness |
C Scale |
Rockwell Hardness |
B Scale |
| 2H* |
850 (455) |
- 248 - 352
- 212 - 352
|
- 24-38
- 38 Max
|
- |
95 min |
| 2HM |
1150 (620) |
159 - 237 |
22 max |
- |
- |
| 7M |
1100 (595) |
159 - 237 |
22 max |
- |
- |
| 3 |
1050 (565)
|
248 - 352 |
24 - 38 |
- |
- |
| 4 and 7 |
1100 (595) |
248 - 352 |
24 - 38 |
- |
- |
| 6 |
1100 (595) |
228 - 271 |
20 - 28 |
- |
- |
| 8 and 8M |
- |
126 - 300 |
- |
- |
60 - 105 |
|
* - up to and incl.
1.1/2" over 1.1/2"
|
|
|
|
IMPACT ENERGY ABSORPTION REQUIREMENTS
Minimum Average Impact Value for Each Set of 3 Specimens 10
x 10 x 50 mm
| ASTM A-194/ASME
SA-194 Top
|
| Grade |
|
|
|
|
ft-lbs (Joules) |
| 4 |
- at - 150 deg. F (-101 deg.
C)
|
|
|
|
- |
| 7 |
- at - 150 deg. F (-101 deg.
C)
|
|
|
|
20 (27) |
| 7M |
- at - 100 deg. F
- (- 73 deg. C)
|
|
|
|
20 (27) |
| ASTM A-320/ASME
SA-320 Top
|
| Grade |
|
|
|
|
ft-lbs (Joules) |
| L7 |
- at - 150 deg. F (-101 deg.
C)
|
|
|
|
20 (27) |
| L7M |
- at - 100 deg. F (-73 deg.
C)
|
|
|
|
20 (27) |
| L43 |
- at - 150 deg. F
- (- 101 deg. C)
|
|
|
|
20 (27) |
| ASTM
A-193/ASME SA-193
Top
|
| Grade |
Minimum Temp |
Tensile Strength |
Yield Strength |
Elongation |
Reduction of Area |
Hardness |
| B5 |
1100 (593) |
100 (690) |
80 (550) |
16 |
50 |
- |
| B6 |
1100 (593) |
110 (760) |
85 (585) |
15 |
50 |
- |
| B7 |
|
|
|
|
|
|
| 2.1/2" AND UNDER |
1100 (593) |
125 (860) |
105 (725) |
16 |
50 |
321 HB (35 HRC) |
| 2.1/2" AND OVER |
1100 (593)
|
115 (790) |
95 (655) |
16 |
50 |
302 HB (33 HRC) |
| OVER 4" TO 7" |
1100 (593) |
100 (690) |
75 (515) |
18 |
50 |
277 HB (29 HRC) |
| B7M |
|
|
|
|
|
|
| 2.1/2" AND UNDER |
1150 (620) |
100 (690) |
80 (550) |
18 |
50 |
235 HB (29 HRC) |
| 2.1/2" AND OVER |
1150 (620) |
100 (690) |
80 (550) |
18 |
50 |
235 HB (99 HRB) |
| OVER 4" TO 7" |
1150 (620) |
100 (690) |
75 (515) |
18 |
50 |
235 HB (99 HRB) |
| B16 |
|
|
|
|
|
|
| 2.1/2" AND UNDER |
1200 (650) |
125 (860) |
105 (725) |
18 |
50 |
321 HB (35 HRC) |
| 2.1/2" AND OVER |
1200 (650) |
110 (760) |
95 (655) |
17 |
45 |
302 HB (33 HRC) |
| OVER 4" TO 7" |
1200 (650) |
100 (690) |
85 (585) |
16 |
45 |
277 HB (29 HRC) |
|
|
|
|
|
|
|
| B8 |
HEAT TREATMENT |
|
|
|
|
|
| Class 1 |
Carbide solution |
75 (515) |
30 (205) |
30 |
50 |
223 HB (96 HRB) |
| Class 2 |
Carbide Solution and Strain hardened |
|
|
|
|
|
|
|
|
|
|
|
|
| 3/4" AND UNDER |
125 (860) |
100 (690) |
12 |
35 |
321 HB (96 HRB) |
|
OVER 3/4 TO 1" |
115 (790) |
80 (55) |
15 |
35 |
321 HB (96 HRB) |
|
1" TO 1.1/4" |
105 (725) |
65 (450) |
20 |
35 |
321 HB (96 HRB) |
|
OVER 1.1/4" TO 1.1/2" |
100 (690) |
50 (345) |
28 |
45 |
321 HB (96 HRB) |
| B8M |
HEAT TREATMENT |
|
|
|
|
|
| Class 1 |
Carbide solution |
75 (515) |
30 (205) |
30 |
50 |
223 HB (96 HRB) |
| Class 2 |
Carbide Solution and Strain hardened |
|
|
|
|
|
|
|
|
|
|
|
|
|
3/4" AND UNDER |
110 (760) |
95 (655) |
15 |
45 |
321 HB (35 HRC) |
|
OVER 3/4 TO 1" |
100 (690) |
80 (55) |
20 |
45 |
321 HB (35 HRC) |
|
1" TO 1.1/4" |
95 (655) |
65 (450) |
25 |
45 |
321 HB (35 HRC) |
|
OVER 1.1/4" TO 1.1/2" |
90 (620) |
50 (345) |
30 |
45 |
321 HB (35 HRC) |
|
