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| Steel Type | Grade | Summary of Properties |
Nominal Chemical Analysis % |
Related Standards | Specified Mechanical Properties |
Heat Treatment |
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| C | Mn | Cr | Mo | Ni | V | Mb | Cu | N | & Specifications | Limiting | Minimum Tensile Properties | Impact Properties | Hardness | |||||||||
| Ruling | UTS | 0.2 % PS | EL | R of A | Charpy `V` Notch | ( Max ) | ||||||||||||||||
| Section | ksi | ksi | % | % | Joules | Temp | HB | |||||||||||||||
| Carbon | LF2 | Standard carbon flange steel with notch | 0.15 | 1.20 | 12 | 12 | 12 | Optional V/Nb | 1 | 1 | ASTM A350 | 1 | 70 | 36 | 22 | 30 | 20 | "-50F" | 197 | As specified by customer | ||
| Steels | 12 | toughness | 12 | 12 | 12 | 2 | to customer requirements | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||
| 12 | X65 | Higher strength, tough weldable steel with | 0.08 | 1.30 | 12 | 12 | 1 | 1 | 1 | 1 | 1 | API 5LX | 6" | 77 | 65 | 1 | 1 | 50 | "-50F" | 1 | Water quenched & | |
| 12 | Flanged Steel | good resistance to Hydrogen Induced Cracking | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | tempered | |
| 1 | 1 | 1 | 1 | 11 | 11 | 1 | ||||||||||||||||
| Alloy | 4130 | Standard 0.3% C CrMo steel with good | 0.30 | 0.50 | 1.00 | 0.20 | 1 | 1 | 1 | 1 | 1 | API 6A Type 2 | 2" | 100 | 80 | 16 | 35 | 1 | 1 | 235 | Water quenched & | |
| Steels | 1 | combination of strength and toughness | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | 12 1/4" | 90 | 80 | 18 | 35 | 20 | "-75F" | 235 | tempered | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | AISI 4130 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 4140 | Standard 0.4% C CrMo steel for use at higher | 0.40 | 0.80 | 1.00 | 0.20 | 1 | 1 | 1 | 1 | 1 | API 6A Type 2 | 3" | 140 | 110 | 14 | 35 | 1 | 1 | 341 | Oil/Water quenched & | |
| 1 | 1 | strength levels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | 7" | 120 | 100 | 14 | 30 | 40 | "23C" | 302 | tempered | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | AISI 4140 | 7" | 100 | 80 | 20 | 40 | 54 | "23C" | 235 | 1 | |
| 1 | 4140 Mod | Enhanced hardenability version of 4140 for | 0.40 | 0.80 | 1.00 | 0.33 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | 10" | 100 | 80 | 20 | 40 | 54 | "23C" | 235 | Oil/Water quenched & | |
| 1 | 1 | larger section sizes | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 14 3/8" | 100 | 80 | 20 | 40 | 1 | 1 | 1 | tempered | |
| 1 | 4145 | Standard 0.45% C CrMo steel for high strength | 0.45 | 0.90 | 1.00 | 0.20 | 1 | 1 | 1 | 1 | 1 | API Sections 4/5/6 | 6 1/2" | 140 | 110 | 13 | 40 | 54 | "23C" | 341 | Oil/Water quenched & | |
| 1 | 1 | in medium section sizes | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | AISI 4145 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | tempered | |
| 1 | 4145 Mod | Enhanced hardenability version of 4145 for | 0.47 | 1.10 | 1.10 | 0.33 | 1 | 1 | 1 | 1 | 1 | API Sections 4/5/6 | 6 7/8" | 140 | 120 | 13 | 40 | 54 | "23C" | 341 | Oil/Water quenched & | |
| 1 | 1 | larger section sizes, suitable for drill collars | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 12 1/4" | 135 | 110 | 13 | 40 | 54 | "23C" | 341 | tempered | |
| 1 | 9Cr1Mo | High strength alloy steel with corrosion | 0.12 | 0.50 | 9.00 | 1.00 | 1 | 1 | 1 | 1 | 1 | ASTM A199 | 11" | 100 | 80 | 20 | 40 | 54 | "23C" | 235 | Oil quenched & | |
| 1 | 1 | resistance superior to the 41xx series | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ASTM A213 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | double tempered | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||
| Martensitic | 410 | 13% Cr steel with high strength and better | 0.10 | 0.50 | 13.00 | 1 | 1 | 1 | 1 | 1 | 1 | ASTM A276 | 10" | 100 | 80 | 20 | 40 | 20 | "-10C" | 235 | Oil quenched & | |
| Stainless | 1 | corrosion resistance than alloy steel | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ASTM A479 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | tempered | |
| Steels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 420 | Lower ferrite 13% Cr steel for improved | 0.20 | 0.80 | 13.00 | 1 | 1 | 1 | 1 | 1 | 1 | ASTM A276 | 6" | 110 | 90 | 17 | 35 | 1 | 1 | 260 | Oil quenched & tempered/ | |
| 1 | 1 | corrosion resistance and enhanced workability | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 6" | 100 | 85 | 20 | 40 | 15 | "-10C" | 241 | double tempered | |
| 1 | F6NM | 13% Cr steel with excellent low temperature | 0.02 | 0.70 | 13.00 | 0.35 | 4.00 | 1 | 1 | 1 | 1 | UNS 42400 | 6" | 100 | 80 | 15 | 35 | 42 | "-60C" | 241 | Air hardened & | |
| 1 | 1 | impact properties and corrosion resistance | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | double tempered | |
| 1 | 1 | 1 | 0.02 | 0.70 | 13.00 | 0.55 | 4.00 | 1 | 1 | 1 | 1 | ASTM A182 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||
| Precipitation | 520B | Machinable corrosion resistant steel with | 0.05 | 0.80 | 13.50 | 1.50 | 5.50 | 1 | 0.30 | 1.70 | 1 | 1 | 1 | 180 | 150 | 10 | 1 | 20 | IZOD | 1 | Solution treated & aged | |
| Hardening | 1 | freedom from distortion on heat treatment to | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 160 | 150 | 12 | 1 | 27 | @ | 1 | 1 | |
| Stainless | 1 | high strengths | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 135 | 110 | 15 | 1 | 54 | "23C" | 1 | 1 | |
| Steels | 17/4 | Improved corrosion resistant age-hardening | 0.05 | 0.80 | 16.00 | 1 | 4.00 | 1 | 0.30 | 3.50 | 1 | UNS S17400 | Condition | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 1 | stainless steel with minimal distortion and | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ASTM A564 | H900 | 190 | 170 | 10 | 40 | 1 | 1 | 448 | Solution treated & aged | |
| 1 | 1 | scaling on heat treating after machining | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | NACE MR0175 | H1150 | 135 | 105 | 16 | 50 | 41 | "23C" | 352 | 1 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | W 1.4548 | H1150M | 115 | 75 | 18 | 55 | 74 | "23C" | 293 | 1 | |
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||
| Austenitic | 304 | Standard stainless steels for high corrosion | 0.04 | 1.50 | 18.50 | 1 | 9.00 | 1 | 1 | 1 | 1 | ASTM A182 | 1 | 75 | 30 | 30 | 50 | 1 | 1 | 1 | Solution treated & | |
| Stainless | 304L | resistance | 0.02 | 1.50 | 18.50 | 1 | 10.50 | 1 | 1 | 1 | 1 | 1 | 1 | 70 | 25 | 30 | 50 | 1 | 1 | 1 | quenched | |
| Steels | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 316 | Standard stainless steels for corrosion | 0.04 | 1.50 | 17.00 | 2.50 | 12.50 | 1 | 1 | 1 | 1 | ASTM A182 | 1 | 75 | 30 | 30 | 50 | 1 | 1 | 1 | Solution treated & | |
| 1 | 316L | resistance higher than 304 types | 0.02 | 1.50 | 17.00 | 2.50 | 13.00 | 1 | 1 | 1 | 1 | 1 | 1 | 70 | 25 | 30 | 50 | 1 | 1 | 1 | quenched | |
| 1 | 316LN | 1 | 0.02 | 1.50 | 17.00 | 2.50 | 12.00 | 1 | 1 | 1 | 0.14 | 1 | 1 | 75 | 30 | 30 | 50 | 1 | 1 | 1 | 1 | |
| 1 | NB. Improved machinable versions of austenitic steels ( prefixed IM ) are also available | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||||||||
| Duplex | 22/5 | Higher strength steel with superior resistance | 0.02 | 1.50 | 22.60 | 3.00 | 5.50 | 1 | 1 | 11 | 0.17 | ASTM A182 | 1 | 90 | 65 | 25 | 45 | 1 | 1 | 1 | Solution treated & | |
| Stainless | 1 | to stress corrosion cracking for chloride and/or | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 11 | 1 | UNS S31803 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | quenched | |
| Steels | 1 | sour gas conditions | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 11 | 1 | NACE MR0175 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| 1 | 25/7 | Higher Cr duplex for improved pitting & | 0.02 | 1.20 | 25.00 | 3.00 | 7.00 | 1 | 1 | 11 | 0.17 | 1 | 1 | 100 | 70 | 25 | 45 | 1 | 1 | 1 | Solution treated & | |
| 1 | 1 | corrosion resistance | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | quenched | |
| 1 | Super Duplex | Enhanced higher strength duplex steel with high | 0.02 | 0.50 | 25.50 | 3.50 | 7.00 | 1 | 1 | 0.70 | 0.23 | UNS S32760 | 1 | 110 | 80 | 25 | 1 | 1 | 1 | 1 | Solution treated & | |
| 1 | 1 | resistance to chloride stress corrosion cracking | 1 | 1 | 1 | 1 | 1 | 1 | 1 | "+0.70%W" | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | quenched | |