Steel 09G2S TMCP
Supply condition
EN 09G2S
TMCP = thermomechanically controlled processed
Pick for heavy plate and linepipe where high toughness plus low carbon equivalent (better field weldability) is needed.
Values for the TMCP condition
Other 09G2S tempers and conditions
09G2S is listed in 6 conditions; see the grade overview at 09G2S.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed | Softest condition, used before heavy cold forming or deep machining; lowest strength, best ductility. | 310 | 470 | 28 | 135 HB | 8 % IACS |
HRDefault Hot rolled | Default mill condition for plate, sections and coil; general welded structures at ambient to −40 °C. | 350 | 500 | 22 | 150 HB | — |
Normalized | Choose for thick plate, pressure vessels and −70 °C service where uniform fine grain and guaranteed low-temperature Charpy are required. | 360 | 510 | 25 | 152 HB | — |
TMCPThis page Thermomechanically controlled processed | Pick for heavy plate and linepipe where high toughness plus low carbon equivalent (better field weldability) is needed. | 400 | 540 | 24 | 165 HB | — |
Quenched and tempered | Used for high-strength thermally strengthened plate/pipe (термоупрочнённый) when 440+ MPa yield is needed at the same weldable chemistry. | 470 | 600 | 19 | 12 HRC | — |
Cold drawn | Cold-drawn round/flat bar and cold-formed hollow sections: higher yield and better surface/tolerance, reduced ductility. | 490 | 590 | 12 | 12 HRC | 8 % IACS |
What is 09G2S TMCP?
09G2S TMCP is 09G2S supplied in the TMCP condition — pick for heavy plate and linepipe where high toughness plus low carbon equivalent (better field weldability) is needed. 09G2S TMCP has a yield strength of 400 MPa (58 ksi) and a tensile strength of 540 MPa (78.3 ksi) — weaker than 60% of steel grades. Elongation at break is 24% and the elastic modulus is 206 GPa (29.9 Msi). 09G2S TMCP has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F). HR is the default condition FabDigit quotes; TMCP is available on request or by drawing note.
Advantages
- Tough — resists crack growth — 150 MPa·√m (136.5 ksi·√in), better than 96% of steel grades
- Readily welded — 92/100, better than 93% of steel grades
- Forms and bends easily — 70/100, better than 86% of steel grades
- Conducts heat well — 48 W/m·K (27.7 BTU/hr·ft·°F), better than 79% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
09G2S TMCP properties
Typical room-temperature values for 09G2S TMCP; 10 are specific to this condition. Other listed values are 09G2S reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
09G2S TMCP has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical16
09G2S TMCP has a yield strength of 400 MPa (58 ksi) and a tensile strength of 540 MPa (78.3 ksi) — weaker than 60% of steel grades. Elongation at break is 24% and the elastic modulus is 206 GPa (29.9 Msi).
Thermal6
09G2S TMCP is rated for continuous service to 400°C (752 °F). It conducts heat at 48 W/m·K (27.7 BTU/hr·ft·°F), better than 79% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
09G2S TMCP conducts electricity at 8 % IACS, better than 55% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (13/100), better than 66% of steel grades.
Sustainability4
Producing a kilogram of 09G2S TMCP takes about 27 MJ of energy and emits 2.2 kg of CO₂ — less than 59% of steel grades. Typical recycled content is 30%.
Manufacturability8
09G2S TMCP's machinability is good (58/100, better than 75% of steel grades); weldability excellent (92/100); formability very good (70/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 09G2S TMCP
Is 09G2S easy to machine?
Machines like a 0.10 %C HSLA steel — gummy chips at low speed; use sharp positive-rake carbide, moderate feed and coolant, ~65 % of AISI 1212 rating.
Can 09G2S be welded?
Excellent weldability (CEV ≈ 0.40–0.46); SMAW/MAG/SAW with low-hydrogen consumables (E50xx / ER70S-6), preheat 100–150 °C only above ~30 mm thickness or below 0 °C.
Can 09G2S be formed, bent or molded?
Cold bends to 2t–3t radius in the as-rolled condition; hot forming 1150–850 °C followed by normalizing restores toughness for cryogenic service.
What surface finishes work on 09G2S?
No anodizing; protect by shot blast + epoxy/alkyd paint, hot-dip galvanizing or zinc-rich primer — bare surfaces rust rapidly outdoors.
09G2S chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CGOST 19281 09Г2С | ≤ 0.12 | 0.1 |
| Si | 0.5 – 0.8 | 0.65 |
| Mn | 1.3 – 1.7 | 1.5 |
| Crresidual | ≤ 0.3 | 0.1 |
| Niresidual | ≤ 0.3 | 0.1 |
| Curesidual | ≤ 0.3 | 0.1 |
| P | ≤ 0.04 | 0.02 |
| S0.035 max for higher quality categories | ≤ 0.04 | 0.02 |
| N | ≤ 0.01 | 0.01 |
| AsGOST limit | ≤ 0.08 | — |
| Fe | balance | — |
09G2S TMCP — frequently asked
What is 09G2S TMCP used for?
09G2S TMCP is typically used for pipelines, welded structures and pressure vessels. In short: highly weldable structural HSLA; Q345/S355-class strength; low-cost CIS plate grade.
What is the yield strength of 09G2S TMCP?
09G2S TMCP has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 540 MPa (78.3 ksi) — weaker than 60% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is 09G2S TMCP easy to machine?
Reasonably — machinability is rated good (58/100, better than 75% of steel grades). Machines like a 0.10 %C HSLA steel — gummy chips at low speed; use sharp positive-rake carbide, moderate feed and coolant, ~65 % of AISI 1212 rating.
Can 09G2S TMCP be welded?
Yes — weldability is rated excellent (92/100). Excellent weldability (CEV ≈ 0.40–0.46); SMAW/MAG/SAW with low-hydrogen consumables (E50xx / ER70S-6), preheat 100–150 °C only above ~30 mm thickness or below 0 °C.
What surface finishes work on 09G2S TMCP?
No anodizing; protect by shot blast + epoxy/alkyd paint, hot-dip galvanizing or zinc-rich primer — bare surfaces rust rapidly outdoors.
Can 09G2S TMCP be formed, bent or molded?
Cold bends to 2t–3t radius in the as-rolled condition; hot forming 1150–850 °C followed by normalizing restores toughness for cryogenic service.
What is the maximum service temperature of 09G2S TMCP?
09G2S TMCP is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 09G2S-HR and 09G2S-CD?
HR is the default condition — default mill condition for plate, sections and coil; general welded structures at ambient to −40 °C. CD: cold-drawn round/flat bar and cold-formed hollow sections: higher yield and better surface/tolerance, reduced ductility. Yield strength is 350 MPa in HR versus 490 MPa in CD.
Sources
- GOST 19281 — Rolled steel of high strength. General specifications — Gosstandart (2014)
- GOST 5520 — Rolled plate for boilers and pressure vessels — Gosstandart (2017)
- GB/T 1591 — High strength low alloy structural steels (Q345/Q355) — SAC (2018)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Marochnik stali i splavov — 09Г2С grade data — Marochnik (2020)
- Mysteel / SMM plate and section price indices (2026)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.