Speciality Steels for the Oil & Gas Industry
Within the Oil & Gas sector we produce the widest single range of steel types ranging from basic CrMo products such as AISI 4140, through more capable NiCrMo grades such as AISI 4330V to corrosion resistant stainless steel such as SF 13/2/5.
Alloy Steels
Alloy – Heat Treated
| Grade | Related standards & specifications | Summary of properties | Specification Sheet |
|---|---|---|---|
| 4130 | NACE MR0175/ISO15156, API 6A | Standard 0.3%C CrMo steel with good combination of strength and toughness | Click to download |
| 4140 | NACE MR0175/ISO15156, API 6A | Standard 0.4%C CrMo steel for use at higher strength levels | Click to download |
| 4140 Mod | NACE MR0175/ISO15156, API 6A | Enhanced hardenability version of 4140 for larger section sizes | Click to download |
| 4145H Mod | API 7-1 | Enhanced hardenability version of 4145 for larger section sizes, suitable for drill collars | Click to download |
| F22 | ASTM A182, UNSK21590, NACE MR0175, ISO 5156 | Weldable steel with good low temperature toughness | |
| 8630 Mod | NACE MR0175, ISO 15156 | High strength alloy steel with good low temperature toughness | |
| 4330V | AMS 6427, ASTM A646,AMS 4330M, UNS K23080 | High strength, high toughness, low alloy steel for oil tool applications | Click to download |
| EN30B | BS970 – 1955 835, M30 – BS970 Pt11983 | High strength alloy, combined with good impact properties | |
| 4340 | ASTM A434 | High strength alloy steel | |
| 9CrMo1 | ASTM A199, ASTM A213, NACE MR0175, ISO 5156 | High strength alloy steel with corrosion resistance superior to the 41xx series | Click to download |
HyPer Grades
| Grade | Related standards & specifications | Summary of properties | Specification Sheet |
|---|---|---|---|
| HyPer30 | TM0177 – Method A | A high performance low alloy steel grade with improved corrosion resistance | Click to download |
| HyPer45 | High strength alloy with impact properties @-20°C | ||
| HyPer 30V | 165ki yield strength with impact properties at room temperature (23°C) | Click to download |
Stainless Steels
Martensitic
| Grade | Related standards & specifications | Summary of properties | Specification Sheet |
|---|---|---|---|
| 410 | UNS S41000, ASTM A276, ASTM A479, NACE MR0175, ISO 15156 | 13% Cr steel with high strength and better corrosion resistance than alloy steels | Click to download |
| 420 mod | UNS S42000, NACE MR0175/ISO15156 | Lower ferrite 13%Cr steel for improved corrosion resistance and enhanced workability | Click to download |
| SF13/2/5 | UNS S41427, NACE MR0175/ ISO15156, X2CrNiMoV13-5-2, X2CrNiMoV13-5-2, NORSOK M650 (110KSI) | Enhanced 13%Cr steel with superior corrosion resistance, strength and toughness |
Click to download |
PPT Hardening
| Grade | Related standards & specifications | Summary of properties |
|---|---|---|
| FV520B | BS5S100, 1.4594, X5CrNiMoCuNb14 | Machinable corrosion resistant steel with freedom from distortion on heat treatment to high strengths |
| 17/4PH H1150D | UNS S17400, NACE MR0175/ ISO15156, ASTM A564, ISO 15156, W 1.4548 | Improved corrosion resistant age hardening stainless steel with minimal distortion and scaling on heat treating after machining |
Sizes, Tolerances and Rolling Reduction
Rolled Rounds
LIBERTY Steel is able to offer both metric and imperial sizes in the as-rolled or peeled/turned condition.
| Min (mm) | Max (mm) | Min (in) | Max (in) |
|---|---|---|---|
| 25 | 381 | 1 | 15 |
Machining Tolerances
For ‘Machining Quality Bar’ to ASTM A29 tolerances the minimum machining allowance should be as follows.
| Ordered Surface Condition | Minimum Stock Removal |
|---|---|
| Peeled/Smooth Turned | 1% per side |
| Black | 1.6% per side |
Minimum Rolling Reduction Ratios for Black bars
| 3ӯ | 4ӯ | 6ӯ | 10ӯ | 12ӯ | |
|---|---|---|---|---|---|
| 5.4t | 52.6:1 | 29.6:1 | 13.1:1 | 4.7:1 | 3.2:1 |
| 6.6t | 66.3:1 | 37.3:1 | 15.5:1 | 5.9:1 | 4:1 |
Other Forms
| Top (mm) | Bottom (mm) | Length (mm) | Weight (t) | |
|---|---|---|---|---|
| Large Bloom Cast | 560 | 400 | 6500-13000 | |
| Square ingot | 653 | 490 | 2310 | 5.4 |
| Square ingot | 721 | 550 | 2285 | 6.6 |
| Rolled slabs, width | 100 | 500 | ||
| Rolled slabs, Thickness | 50 | 330 |
| Top (in) | Bottom (in) | Length (in) | Weight (short tonne) | |
|---|---|---|---|---|
| Large Bloom Cast | 22 | 153/4 | 256-512 | |
| Square ingot | 253/4 | 191/4 | 91 | 5.9 |
| Square ingot | 283/8 | 2111/64 | 90 | 7.3 |
| Rolled slabs, width | 37/8 | 195/8 | ||
| Rolled slabs, Thickness | 2 | 127/8 |
Got a question?
We have a comprehensive technical support team available to advise on grade selection and product range to achieve the maximum benefit. Customer Technical support provide specialist advice and help with day-to-day problem solving.
Works based metallurgists and the full resources of our Steel Research and Development Laboratories are available to assist with longer-term developments.
For further information, enquiries or any technical guidance on our range of products please contact us.
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