| |
| ASTM A193 B7 (Cr- Mo AISI 4140,4142,4145 ) |
| This material is considered as the most suitable for bolts to be used at temperature below 450 °. C, with a minimum effect on its structural strength during application at a high temperature.The material has the following chemical properties and physical Characteristics. |
| |
| C |
Mn |
P |
S |
Si |
Cr |
Mo |
| 0.37-0.49 |
0.65-1.10 |
0.035 Max |
0.04 Max |
0.15-0.35 |
0.75-1.20 |
0.15-0.25 |
| Dia |
Minimum Tempering Temperature ( ° F ) |
Tensile Strength min, ksi ( MPa) |
Yield Strength. min, 0.2% offset, Ksi ( MPa) |
Elongation in 4D min % |
Reduction of Area min % |
Hardness max |
| 21/2" and under |
1,100
(593 ° C ) |
125(860) |
105(720) |
16 |
50 |
321HB or 35 HRc |
| over 21/2" to 4" |
1,100
(593 ° C ) |
115(795) |
95(655) |
16 |
50 |
302HB or 35 HRc |
| over 4" to 7" |
1,100
(593 ° C ) |
100(690) |
75(515) |
16 |
50 |
277HB or 29 HRc |
|
| |
| ASTM A1193 B7M (Cr- Mo AISI 4140,4142,4145 ) |
| C |
Mn |
P |
S |
Si |
Cr |
Mo |
| 0.37-0.49 |
0.65-1.10 |
0.035 Max |
0.04 Max |
0.15-0.35 |
0.75-1.20 |
0.15-0.25 |
| Dia |
Minimum Tempering Temperature ( ° F ) |
Tensile Strength min, ksi ( MPa) |
Yield Strength. min, 0.2% offset, Ksi ( MPa) |
Elongation in 2D min % |
Reduction of Area min % |
Hardness max |
| 21/2" and under |
1,150
(620 ° C ) |
100(690) |
80(550) |
18 |
50 |
235HB, 99HRB |
|
| |
| ASTM A193 B16 (Cr- Mo -V ) |
This material is considered as the most suitable for bolts to be used at temperature below 450 °. C,even at a high temperature range, the material has superior physical characterestics compared to ASTM A193 B7 previously mentioned.The chemical properties and physical characteristics are as follows |
| |
| C |
Mn |
P |
S |
Si |
Cr |
Mo |
| 0.36-0.47 |
0.65-1.10 |
0.035 Max |
0.04 Max |
0.15-0.35 |
0.75-1.20 |
0.15-0.25 |
| Dia |
Minimum Tempering Temperature ( ° F ) |
Tensile Strength min, ksi ( MPa) |
Yield Strength. min, 0.2% offset, Ksi ( MPa) |
Elongation in 4D min % |
Reduction of Area min % |
Hardness max |
| 21/2" and under |
1200(650) |
125(860) |
105(720) |
18 |
50 |
321HB
or 35 HRc |
over
21/2" to 4" |
1200(650) |
110(760) |
95(655) |
17 |
45 |
302HB
or 35 HRc |
over
4" to 7" |
1200(650) |
100(690) |
85(586) |
16 |
45 |
277HB
or 29 HRc |
|
| |
| ASTM A193 B5 (5% Cr AISI 501) |
| C |
Mn |
P |
S |
Si |
Cr |
Mo |
| 0.10 max |
1.00 max |
0.040 max |
0.030 Max |
1.0 Max |
4.00 - 6.00 |
0.40 -0.65 |
| Dia |
Minimum Tempering Temperature ( ° F ) (°C) |
Tensile Strength min, ksi ( MPa) |
Yield Strength. min, 0.2% offset, Ksi ( MPa) |
Elongation in 2D min % |
Reduction of Area min % |
Hardness max |
| up to 4" incl |
1.100 (593 ) |
100(690) |
80(550) |
16 |
50 |
- |
|
| |
| ASTM A193 B8 (AISI 304) B8A Chemical Requirements |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
18.00 - 20.00 |
8.00 -10.50 |
|
| |
| ASTM A193 B8C (AISI 347) B8CA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Columbium + Tantalum |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00 - 19.00 |
9.00 -13.00 |
10 x Carbon
content, min |
|
| |
| ASTM A193 B8N (AISI 304N) B8NA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Nitrogen |
| 0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
18.00 - 20.00 |
8.00 -10.50 |
0.10 - 0.16 |
|
| |
| ASTM A193 B8MN (AISI 316N) B8MNA |
| C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Nitrogen |
| 0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
16.00 - 18.00 |
10.00 -14.00 |
2.00 - 3.00 |
0.10 - 0.16 |
|
| |
| ASTM A193 B8P (AISI 305) B8PA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00 - 19.00 |
10.50 -13.00 |
|
| |
| ASTM A193 B8T (AISI 321) B8TA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Titanium |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00 - 19.00 |
9.00 -12.00 |
5 x Carbon content, min |
|
| |
| ASTM A193 B8R B8RA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Nitrogen |
Columbium + Tanalum |
V |
0.06 Max |
4.00 - 6.00 |
0.040 Max |
0.030 Max |
1.00 Max |
20.50 - 23.50 |
11.50 -13.50 |
1.50 - 3.00 |
0.20 - 0.40 |
0.10 - 0.30 |
0.10 - 0.30 |
|
| |
| ASTM A193 B8S B8SA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Nitrogen |
0.10 Max |
7.00 - 9.00 |
0.040 Max |
0.030 Max |
3.50 - 4.50 |
16.00 - 18.00 |
8.00 - 9.00 |
0.08 - 0.18 |
|
| |
| ASTM A193 B8LN, B8LNA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Nitrogen |
0.030 Max |
2 |
0.045 Max |
0.030 Max |
1 |
18.00 - 20.00 |
8.00 - 10.50 |
- |
0.10 - 0.16 |
|
| |
| B8MLN, B8MLNA |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Nitrogen |
0.030 Max |
2 |
0.045 Max |
0.030 Max |
1 |
16.00 - 18.00 |
10.00 - 14.00 |
2.00 - 3.00 |
0.10 - 0.16 |
|
| |
| CLASS I: B8, B8C, B8M, B8P, B8T, B8LN, B8MLN Mechanical Requirements |
Dia |
Heat Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of Area min % |
Hardness max |
All diameters |
Carbide Solution Treated |
75(515) |
30(205) |
30 |
50 |
223 HB or 96HRB
(3/4" in & smaller, 241HB or 100 HRB) |
|
| |
| CLASS IA: B8A, B8CA, B8MA, B8PA, B8TA, B8LNA, B8MLNA, B8NA, B8MN4 |
Dia |
Heat Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of Area min % |
Hardness max |
All diameters |
Carbide Solution Treated in the finished conditions |
75(515) |
30(205) |
30 |
50 |
192 HB
or 90HRB |
|
| |
| CLASS IB: B8N, B8MN |
Dia |
Heat Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of Area min % |
Hardness max |
All diameters |
Carbide Solution Treated |
80(550) |
35(240) |
30 |
40 |
223 HB or 96HRB
(3/4" in & smaller, 241HB or 100 HRB) |
|
| |
| CLASS IC: B8R |
Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
All diameters |
Carbide Solution
Treated |
100(690) |
55(380) |
35 |
55 |
271 HB
or 28 HRC |
|
| |
| CLASS IC: B8RA |
Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
All diameters |
Carbide Solution Treated in the finished condition |
100(690) |
55(380) |
35 |
55 |
271 HB
or 28 HRC |
|
| |
| CLASS IC: B8S |
Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
All diameters |
Carbide Solution Treated |
95(655) |
50(345) |
35 |
55 |
271 HB
or 28 HRC |
|
| |
| CLASS IC: B8SA |
Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
All diameters |
Carbide Solution Treated in the finished condition |
95(655) |
50(345) |
35 |
55 |
271 HB
or 28 HRC |
|
| |
| CLASS 2: B8, B8C, B8P, B8T, B8N |
| Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
| 3/4" & under |
Carbide Solution Treated and strain
Hardened
|
125(860) |
100(690) |
12 |
35 |
321 HB
or 35 HRC |
| over 3/4" & 1" incl |
115(795) |
80(550) |
15 |
35 |
| over 1" & 11/4" incl |
105(725) |
65(450) |
20 |
35 |
| 11/4" to 11/2" incl |
100(690) |
50(345) |
28 |
45 |
|
| |
| CLASS 2: B8MN / B8M |
| Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
| 3/4" & under |
Carbide Solution Treated and strain
Hardened
|
110(760) |
95(655) |
15 |
45 |
321 HB
or 35 HRC |
| over 3/4" & 1" incl |
100(690) |
80(550) |
20 |
45 |
| over 1" & 11/4" incl |
95(655) |
65(450) |
25 |
45 |
| 11/4" to 11/2" incl |
95(655) |
75(515) |
25 |
40 |
|
| |
| CLASS 2B: B8M2 |
| Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
| 2" & under |
Carbide Solution Treated and strain
Hardened
|
95(655) |
75(515) |
25 |
40 |
321 HB
or 35 HRC |
| over 2" & 21/2" incl |
90(620) |
65(450) |
30 |
40 |
| over 21/2" to 3" incl |
80(550) |
55(380) |
30 |
40 |
|
| |
| ASTM A 320 L7M |
| Dia |
Heat
Treatement |
Tensile Strength. min, ksi (MPa) |
Yield Strength min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Reduction of
Area min % |
Hardness max |
| 21/2" and under |
Quenched and tempered at 1,150 ° F
(620 ° C) min |
100(690) |
80(550) |
18 |
50 |
235HB
or 99HRB |
|
| |
| ASTM A320 B8 (18Cr-8Ni AISI 304) |
| This material is considered as the most suitable for bolts and nuts to be used at temperatures (-)100-(-)200 ° C The chemical properties are as follows: |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
18.00-20.00 |
8.00-10.50 |
|
| |
| ASTM A320 B8M |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
16.00-18.00 |
10.00-14.00 |
2.00-3.00 |
|
| |
| ASTM A320 B8C |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Columbium + Tantulum |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00-19.00 |
9.00-13.00 |
10 * Carbon content, min |
|
| |
| ASTM A320 B8T |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Titanium |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00-19.00 |
9.00-12.00 |
5 * Carbon content, min |
|
| |
| Super High Temperature Resistant Bolt Material Chemical & Mechanical Requirements |
| This material is considered as suitable for bolts to be used as temperature below 1,200 ° F (650 ° C) and the material has superior resistence to oxidation and shrinkage to those high temperature resistant bolt material mentioned so far. The chemical properties and physical characteristics are as follows: |
| ASTM A453 Gr. 660 |
C |
Mn |
P |
S |
Si |
Cr |
0.08 Max |
2.00 Max |
0.040 Max |
0.030 Max |
1.00 Max |
24.00-27.00 |
Ni |
Mo |
Ti |
Al |
V |
Boron |
13.50-16.00 |
1.00-1.50 |
1.90-2.35 |
0.35 Max |
0.10-0.50 |
0.0010 - 0.010 |
CLASS |
Tensile Strength.
min, Ksi (MPa) |
YieldStrength. min,0.2% offset, Ksi(MPa) |
Elongation in 4x Dia. min, % |
Reduction of Area min, % |
Brinell Hardness Number |
A,B and C |
130(895) |
85(585) |
15 |
18 |
248-341 (min 99HRB, max 37HRC) |
|
| |
| ASTM B408 (800,800H) |
Ni |
Cr |
Fe |
Mu |
C |
Cu |
Si |
S |
Al |
Ti |
30.0 - 35.0 |
19.0 - 23.0 |
*39.5 min |
1.5 Max |
0.10 Max |
0.75 Max |
1.0 Max |
0.015 Max |
0.15 - 0.60 |
0.15 - 0.60 |
|
| |
| * = Iron shall be determined arithmetically by differenece |
| |
| HASTALLOY C/ASME SB336,UNS N10002 |
Class |
Ni |
Co |
Cr |
Mo |
W |
Fe |
Si |
Mn |
C |
C |
Balance |
< 2.5 |
16 |
16 |
4 |
5 |
< 1.00 |
< 1.00 |
< 0.08 |
|
| |
| Monel K-500 |
| Ni |
C |
Mn |
Fe |
S |
Si |
Cu |
Al |
Ti |
| 63 - 70 |
0.25 Max |
1.50 Max |
2.00 Max |
0.01 Max |
0.5 Max |
balance |
2.3 - 3.15 |
0.35 - 0.85 |
|
| |
| Monel 400 |
Ni |
C |
Mn |
Fe |
S |
Si |
Cu |
63 - 70 |
0.30 Max |
2.0 Max |
2.5 Max |
0.024 Max |
0.050 Max |
balance |
|
| |
| Nut Material Chemical & Mechanical Requirements |
| |
| ASTM A194 Gr.2H |
| This is the material for bolts made from ASTM A-193 B7, considered to be used with suitable heat treatment. The chemical properties and physical characteristics are as follows : |
C |
Mn |
P |
S |
Si |
Brinell Hardness |
Rockwell Hardness |
0.40 Min |
1.00 Max |
0.040 Max |
0.050 Max |
0.40 Max |
To 11/2" incl 248 to 352 |
24 to 38 HRC |
Over 11/2",
212 to 352 |
38 HRC Max |
|
| |
| ASTM A194 Gr.2HM |
C |
Mn |
P |
S |
Si |
Brinell Hardness |
Rockwell Hardness |
0.40 Min |
1.00 Max |
0.040 Max |
0.050 Max |
0.40 Max |
159 to 237 |
22 HRC Max |
|
| |
| ASTM A194 Gr.4 |
| This material is considered as the most suitable for nuts,when they are used with bolts made from ASTM A-193 B16 and A-320 L7. Even at high temperature range. then material has superior physical characteristics to those ASTMA A-194 2H previously mentioned. The chemical properties and physical characteristics are as follows : |
C |
Mn |
P |
S |
Si |
Mo |
Brinell Hardness |
Rockwell Hardness |
0.40 - 0.50 |
0.70 - 0.90 |
0.035 Max |
0.04 Max |
0.15 - 0.35 |
0.20 - 0.30 |
248 to 352 |
24 to 38 HRC |
|
| |
| ASTM A194 Gr. 8 (AISI 304) |
| This is nut material for bolts made from ASTM A-193 B8, considered to be used with suitable heat treatment. The chemical properties and physical characteristics are as follows : |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Brinell Hardness |
Rockwell Hardness |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
18.00 - 20.00 |
8.00 - 10.50 |
126 to 300 |
60 to 105 HRB |
|
| |
| ASTM A194 Gr. 8M (AISI 316) |
| This is nut material for bolts made from ASTM A-193 B8M and A-320 B8M, considered to be used with suitable heat treatment. The chemical properties and physical characteristics are as follows : |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Mo |
Brinell Hardness |
Rockwell Hardness |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
16.00 - 18.00 |
10.00 - 14.00 |
2.00 - 3.00 |
126 to 300 |
60 to 105 HRB |
|
| |
| ASTM A194 Gr. 8C (AISI 347) |
| This is nut material for bolts made from ASTM A-193 B8C, A-320 B8Cand A-320 B8T, considered to be used with suitable heat treatment. The chemical properties and physical characteristics are as follows : |
| |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Cb + Ta |
Brinell Hardness |
Rockwell Hardness |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00 - 19.00 |
9.00 - 13.00 |
10 * C% min |
126 to 300 |
60 to 105 HRB |
|
| |
| ASTM A194 Gr. 8T (AISI 321) |
| This is nut material for bolts made from ASTM A-193 B8Tand A-320 B8T, considered to be used with suitable heat treatment. The chemical properties and physical characteristics are as follows : |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
Ti |
Brinell Hardness |
Rockwell Hardness |
0.08 Max |
2.00 Max |
0.045 Max |
0.030 Max |
1.00 Max |
17.00 - 19.00 |
9.00 - 12.00 |
5 C% min |
126 to 300 |
60 to 105 HRB |
|
| |
| ASTM A307 |
| This material is suitable in structural application where nominal strength alongwith weldability is required. |
Grade |
P |
S |
Tensile Strength min, ksi (MPa) |
Yield Strength. min, 0.2% offset, Ksi (MPa) |
Elongation in 2" min % |
Hardness max |
A |
0.06 Max |
0.15 Max |
60 (415) |
- |
18 |
121 - 241 BHN |
B |
0.04 Max |
0.05 Max |
60 - 100
(415 - 690) |
- |
18 |
121 - 212 BHN |
C |
- |
- |
58 - 80
(400 - 550) |
36(50) |
23 |
Not Required |
|
| |
| ASTM A563 |
| This specification of material is used for manufactoring nuts for balts/styds made from ASTM A307 |
Grade |
C |
Mn (Max) |
P (Max) |
S (Max) |
O,A,B,C |
0.58 Max |
- |
0.13 |
- |
D |
0.58 Max |
0.27 |
0.048 |
0.058 |
DH |
0.18-0.58 |
0.57 |
0.048 |
0.058 |
|
| |
| Grade |
Hardness Required |
| O |
103 to 302 BHN |
| A |
116 to 302 BHN |
| B |
90 to 121 BHN |
| C |
143 to 352 BHN |
| D |
159 to 352 BHN |
| DH |
248 to 352 BHN |
|
| |
| |
