PETROCHEMICAL BOLTING GRADES
| GRADE | ASTM | DESCRIPTION |
|---|---|---|
| B5 | A193 | Type 501 Stainless Steel, 4-6% Chromium |
| B6 | A193 | Type 410 Stainless Steel, 12% Chromium |
| B7 | A193 | Chromium-Molybdenum, AISI 4140 |
| B7M | A193 | Chromium-Molybdenum, AISI 4140 |
| B8 | A193 | Type 304 Stainless Steel |
| B8 Class 2 | A193 | Type 304 Stainless Steel, Strain Hardened |
| B8M | A193 | Type 316 Stainless Steel |
| B8M Class 2 | A193 | Type 316 Stainless Steel, Strain Hardened |
| B8C | A193 | Type 347 Stainless Steel |
| B8T | A193 | Type 321 Stainless Steel |
| B16 | A193 | Chromium-Molybdenum-Vanadium |
| L7 / L7M / L43 | A320 | Chromium-Molybdenum, AISI 4140, Low Temp Service |
| 660 A, B & D | A453 | Heat Resistant, Precipitation Hardening Steel |
PETROCHEMICAL NUT GRADES
| GRADE | ASTM | DESCRIPTION |
|---|---|---|
| 2H | A194 | Carbon Steel |
| 2HM | A194 | Carbon Steel |
| 3 | A194 | Type 501 Stainless Steel |
| 4 | A194 | Carbon-Molybdenum |
| 6 | A194 | Type 410 Stainless Steel |
| 7 | A194 | Type 4140 / 4142 / 4145 |
| 7M | A194 | Type 4140H / 4142H / 4145H |
| 8 | A194 | Type 304 Stainless Steel |
| 8A | A194 | Type 304 Stainless Steel |
| 8C | A194 | Type 347 Stainless Steel |
| 8T | A194 | Type 321 Stainless Steel |
| 8M | A194 | Type 316 Stainless Steel |
| 8MA | A194 | Type 316 Stainless Steel |
DUPLEX / SUPER DUPLEX
| ALLOY | COMMON NAME | EUROPEAN | UNS | ASTM / ASME |
|---|---|---|---|---|
| Alloy 255 | Ferralium 255 ® | 1.4507 | S32550 | F61 |
| Zeron 100 | Zeron 100 ® | 1.4501 | S32760 | F55 |
| Alloy 2507 | SAF 2507 ® | 1.441 | S32750 | F53 |
| Alloy 2205 | SAF 2205 ® | 1.4462 | S32205 | F60 |
| 31803 | 31803 | 1.4462 | S31803 | F51 |
HIGH NICKEL ALLOYS
| ALLOY | COMMON NAME | EUROPEAN | UNS | ASTM / ASME |
|---|---|---|---|---|
| Alloy 600 | Inconel 600 ® | 2.4816 | N06600 | B166 |
| Alloy 601 | Inconel 601 ® | 2.4627 | N06601 | B166 |
| Alloy 625 | Inconel 625 ® | 2.4856 | N06625 | B446 |
| Alloy 718 | Inconel 718 ® | 1.4668 | N07718 | B637 |
| Alloy 750 | Inconel 750 ® | 2.4669 | N07750 | B637 |
| Alloy 400 | Monel 400 ® | 2.436 | N04400 | F467 |
| Alloy K500 | Monel K500 ® | 4.4375 | N05500 | B865-04 |
| Alloy C276 | Hastelloy C276 ® | 2.4819 | N10276 | B574 |
| Alloy 22 | Hastelloy C22 ® | 2.4602 | N06022 | B574 |
| Alloy 50 | Nitronic 50 ® | - | S20910 | A479 XM-19 |
| Alloy 60 | Nitronic 60 ® | - | S21800 | A193 B8S |
| Alloy 75 | Nimonic 75 ® | 2.4951 | N06075 | B637 |
| Alloy 80A | Nimonic 80A ® | 2.4952 | N07080 | B637 |
| Alloy 90 | Nimonic 90 ® | - | N07090 | B408 |
| Alloy 800 | Incoloy 800 ® | 1.4876 | N08800 | B408 |
| Alloy 800H | Incoloy 800H ® | - | - | B408 |
| Alloy 800HT | Incoloy 800HT ® | 1.4959 | N08811 | B408 |
| Alloy 825 | Incoloy 825 ® | 2.4858 | N08825 | B425 |
| Alloy 925 | Incoloy 925 ® | - | N09925 | B805 |
ENGINEERING STEELS
| BS970 1991 | BS970 1995 EN | AISI / SAE | EUROPEAN |
|---|---|---|---|
| 070M20 | EN3B | 1020 | 1.0402 |
| 080M40 | EN8 | 1040 | 1.1186 |
| 070M55 | EN9 | 1055 | 1.0535 |
| 605M36 | EN16 | - | - |
| 708M40 | EN19 | 4140 | 1.7225 |
| 817M40 | EN24 | 4340 | 1.6582 |
| 655M13 | EN36 | 3415 | 1.5752 |
STAINLESS STEELS
| BS970 1991 | AISI / SAE | EUROPEAN |
|---|---|---|
| 303S31 | 303 | 1.4305 |
| 304S15 | 304 | 1.4301 |
| 316S31 | 316 | 1.4401 |
| 321S31 | 321 | 1.4541 |
| 410S21 | 410 | 1.4006 |
| 431S29 | 431 | 1.4057 |
| - | 904L | 1.4539 |
PETROCHEMICAL BOLTING GRADES
B5
ASTMA193
DescriptionType 501 Stainless Steel, 4-6% Chromium
B6
ASTMA193
DescriptionType 410 Stainless Steel, 12% Chromium
B7
ASTMA193
DescriptionChromium-Molybdenum, AISI 4140
B7M
ASTMA193
DescriptionChromium-Molybdenum, AISI 4140
B8
ASTMA193
DescriptionType 304 Stainless Steel
B8 Class 2
ASTMA193
DescriptionType 304 Stainless Steel, Strain Hardened
B8M
ASTMA193
DescriptionType 316 Stainless Steel
B8M Class 2
ASTMA193
DescriptionType 316 Stainless Steel, Strain Hardened
B8C
ASTMA193
DescriptionType 347 Stainless Steel
B8T
ASTMA193
DescriptionType 321 Stainless Steel
B16
ASTMA193
DescriptionChromium-Molybdenum-Vanadium
L7 / L7M / L43
ASTMA320
DescriptionChromium-Molybdenum, AISI 4140, Low Temp Service
660 A, B & D
ASTMA453
DescriptionHeat Resistant, Precipitation Hardening Steel
PETROCHEMICAL NUT GRADES
2H
ASTMA194
DescriptionCarbon Steel
2HM
ASTMA194
DescriptionCarbon Steel
3
ASTMA194
DescriptionType 501 Stainless Steel
4
ASTMA194
DescriptionCarbon-Molybdenum
6
ASTMA194
DescriptionType 410 Stainless Steel
7
ASTMA194
DescriptionType 4140 / 4142 / 4145
7M
ASTMA194
DescriptionType 4140H / 4142H / 4145H
8
ASTMA194
DescriptionType 304 Stainless Steel
8A
ASTMA194
DescriptionType 304 Stainless Steel
8C
ASTMA194
DescriptionType 347 Stainless Steel
8T
ASTMA194
DescriptionType 321 Stainless Steel
8M
ASTMA194
DescriptionType 316 Stainless Steel
8MA
ASTMA194
DescriptionType 316 Stainless Steel
DUPLEX / SUPER DUPLEX
Alloy 255
Common NameFerralium 255 ®
European1.4507
UNSS32550
ASTM / ASMEF61
Zeron 100
Common NameZeron 100 ®
European1.4501
UNSS32760
ASTM / ASMEF55
Alloy 2507
Common NameSAF 2507 ®
European1.441
UNSS32750
ASTM / ASMEF53
Alloy 2205
Common NameSAF 2205 ®
European1.4462
UNSS32205
ASTM / ASMEF60
31803
Common Name31803
European1.4462
UNSS31803
ASTM / ASMEF51
HIGH NICKEL ALLOYS
Alloy 600
Common NameInconel 600 ®
European2.4816
UNSN06600
ASTM / ASMEB166
Alloy 601
Common NameInconel 601 ®
European2.4627
UNSN06601
ASTM / ASMEB166
Alloy 625
Common NameInconel 625 ®
European2.4856
UNSN06625
ASTM / ASMEB446
Alloy 718
Common NameInconel 718 ®
European1.4668
UNSN07718
ASTM / ASMEB637
Alloy 750
Common NameInconel 750 ®
European2.4669
UNSN07750
ASTM / ASMEB637
Alloy 400
Common NameMonel 400 ®
European2.436
UNSN04400
ASTM / ASMEF467
Alloy K500
Common NameMonel K500 ®
European4.4375
UNSN05500
ASTM / ASMEB865-04
Alloy C276
Common NameHastelloy C276 ®
European2.4819
UNSN10276
ASTM / ASMEB574
Alloy 22
Common NameHastelloy C22 ®
European2.4602
UNSN06022
ASTM / ASMEB574
Alloy 50
Common NameNitronic 50 ®
UNSS20910
ASTM / ASMEA479 XM-19
Alloy 60
Common NameNitronic 60 ®
UNSS21800
ASTM / ASMEA193 B8S
Alloy 75
Common NameNimonic 75 ®
European2.4951
UNSN06075
ASTM / ASMEB637
Alloy 80A
Common NameNimonic 80A ®
European2.4952
UNSN07080
ASTM / ASMEB637
Alloy 90
Common NameNimonic 90 ®
UNSN07090
ASTM / ASMEB408
Alloy 800
Common NameIncoloy 800 ®
European1.4876
UNSN08800
ASTM / ASMEB408
Alloy 800H
Common NameIncoloy 800H ®
ASTM / ASMEB408
Alloy 800 HT
Common NameIncoloy 800HT ®
European1.4959
UNSN08811
ASTM / ASMEB408
Alloy 825
Common NameIncoloy 825 ®
European2.4858
UNSN08825
ASTM / ASMEB425
Alloy 925
Common NameIncoloy 925 ®
UNSN09925
ASTM / ASMEB805
ENGINEERING STEELS
070M20
+
BS970 1995 ENEN3B
AISI / SAE1020
European1.0402
080M40
+
BS970 1995 ENEN8
AISI / SAE1040
European1.1186
070M55
+
BS970 1995 ENEN9
AISI / SAE1055
European1.0535
605M36
+
BS970 1995 ENEN16
AISI / SAE-
European-
708M40
+
BS970 1995 ENEN19
AISI / SAE4140
European1.7225
817M40
+
BS970 1995 ENEN24
AISI / SAE4340
European1.6582
655M13
+
BS970 1995 ENEN36
AISI / SAE3415
European1.5752
STAINLESS STEELS
303S31
+
AISI / SAE303
European1.4305
304S15
+
AISI / SAE304
European1.4301
316S31
+
AISI / SAE316
European1.4401
321S31
+
AISI / SAE321
European1.4541
410S21
+
AISI / SAE410
European1.4006
431S29
+
AISI / SAE431
European1.4057
904L
+
BS970 1991-
European1.4539
Items in the materials above are manufactured to order on many cases. All types of items can be produced including all standard studbolts, fasteners and fixings and also special items to suit customer drawings and requirements.
Different coatings are available, some from stock, including: Zinc, Zinc Nickel, Hot Dipped Galvanised, Sheradised, Copper, Phosphate and P.T.F.E Coatings. For the full range of coatings see our Plating and Coatings section in the petrochemical product section.