Steel 10G2S1
10G2S1 is a higher-manganese GOST HSLA structural steel with about 1 % silicon, supplied hot-rolled, normalized, quenched-and-tempered, annealed or cold-drawn.
Reference datasheet — 10G2S1 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the HR condition
10G2S1 tempers and conditions
10G2S1 is supplied in 5 conditions, soft to hard. HR is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed | Choose for maximum ductility and dimensional stability before heavy forming or machining. | 305 | 460 | 28 | 143 HB | 6.9 % IACS |
HRDefault Hot rolled | Default mill condition for welded structural plate and sections at strength class 345. | 360 | 510 | 23 | 160 HB | — |
Normalized | Pick for uniform fine grain and best low-temperature toughness in thicker plate and forgings. | 375 | 520 | 25 | 165 HB | — |
Quenched and tempered | Use where higher yield (390–440 MPa class) allows thinner, lighter welded sections. | 440 | 600 | 19 | 15 HRC | — |
Cold drawn | Pick for close tolerance bar or strip where extra strength and surface finish matter more than ductility. | 480 | 580 | 12 | 185 HB | — |
What is 10G2S1?
10G2S1 is a higher-manganese GOST HSLA structural steel with about 1 % silicon, supplied hot-rolled, normalized, quenched-and-tempered, annealed or cold-drawn. Engineers specify it for cold-resistant welded structures and machinery in plate, section, bar and pipe-fitting form, where 360 MPa yield, 510 MPa tensile, 23 % elongation and 160 HB are required together with toughness down to -70 °C. Service temperature is capped near 400 °C and the steel has no inherent corrosion resistance, so coating is required. Weldability is good but slightly below 09G2S because of the higher Mn and Si; 09G2S or S355J2+N are the nearest alternatives. 10G2S1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F). 10G2S1 has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 510 MPa (74 ksi) — weaker than 72% of steel grades. Elongation at break is 23% and the elastic modulus is 206 GPa (29.9 Msi).
What is 10G2S1 used for?
- cold-climate structures
- machinery frames
- pipe fittings
Advantages
- Forms and bends easily — 65/100, better than 81% of steel grades
- Readily welded — 78/100, better than 78% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
- Low electrical conductivity — 6.6 % IACS, worse than 76% of steel grades
10G2S1 properties
Typical room-temperature values for 10G2S1-HR; bars are the position among steel grades.
Physical3
10G2S1 has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,450°C (2,642 °F).
Mechanical15
10G2S1 has a yield strength of 360 MPa (52.2 ksi) and a tensile strength of 510 MPa (74 ksi) — weaker than 72% of steel grades. Elongation at break is 23% and the elastic modulus is 206 GPa (29.9 Msi).
Thermal6
10G2S1 is rated for continuous service to 400°C (752 °F). It conducts heat at 42 W/m·K (24.3 BTU/hr·ft·°F), worse than 56% of steel grades. Thermal expansion is 11.9 µm/m·K (6.61 µin/in·°F).
Electrical3
10G2S1 conducts electricity at 6.6 % IACS, worse than 76% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (14/100), better than 70% of steel grades.
Sustainability4
Producing a kilogram of 10G2S1 takes about 25 MJ of energy and emits 2 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 30%.
Manufacturability8
10G2S1's machinability is good (55/100, better than 62% of steel grades); weldability very good (78/100); formability good (65/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the steel family
Yield strength against density for every steel grade FabDigit runs. 10G2S1 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 10G2S1
Is 10G2S1 easy to machine?
Machines like a 350 MPa-yield HSLA steel at ~55–60 % of AISI 1212; the ~1 % Si makes chips gummy, so use sharp coated carbide, positive rake and generous feed to avoid work hardening.
Can 10G2S1 be welded?
Weldable without restriction by MMA/MAG/SAW with low-hydrogen basic consumables; preheat 100–150 °C above ~30 mm or below 0 °C ambient and control interpass heat input to protect −70 °C toughness.
Can 10G2S1 be formed, bent or molded?
Good cold bending and press-braking with bend radii ≥2t; hot forming 850–1150 °C followed by normalizing restores toughness after heavy deformation.
10G2S1 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 |
|---|---|---|
| Clow carbon for weldability | 0.08 – 0.12 | 0.1 |
| Sisolid-solution strengthening | 0.8 – 1.1 | 0.95 |
| Mn | 1.3 – 1.65 | 1.45 |
| Crresidual | ≤ 0.3 | 0.1 |
| Niresidual | ≤ 0.3 | 0.1 |
| Cuup to 0.6 in the 10G2S1D copper-bearing variant | ≤ 0.3 | 0.15 |
| P | ≤ 0.04 | 0.02 |
| S | ≤ 0.04 | 0.02 |
| N | ≤ 0.01 | 0.01 |
| As | ≤ 0.08 | |
| Fe | balance |
What surface finishes work on 10G2S1?
No natural corrosion resistance — shot-blast to Sa 2½ then epoxy/polyurethane paint, hot-dip galvanize or thermal spray; phosphating suits fasteners and machined parts.
Surface treatments FabDigit runs on steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Black / Phosphate
Thermal Spray
How much does 10G2S1 cost?
10G2S1 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
10G2S1 — frequently asked
What is 10G2S1 used for?
10G2S1 is typically used for cold-climate structures, machinery frames and pipe fittings. In short: cold-tough GOST HSLA; higher strength than 09G2S; weldable down to -70 °C service.
What is the yield strength of 10G2S1?
10G2S1 has a typical yield strength of 360 MPa (52.2 ksi) and a tensile strength of 510 MPa (74 ksi) — weaker than 72% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is 10G2S1 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like a 350 MPa-yield HSLA steel at ~55–60 % of AISI 1212; the ~1 % Si makes chips gummy, so use sharp coated carbide, positive rake and generous feed to avoid work hardening.
Can 10G2S1 be welded?
Yes — weldability is rated very good (78/100). Weldable without restriction by MMA/MAG/SAW with low-hydrogen basic consumables; preheat 100–150 °C above ~30 mm or below 0 °C ambient and control interpass heat input to protect −70 °C toughness.
What surface finishes work on 10G2S1?
No natural corrosion resistance — shot-blast to Sa 2½ then epoxy/polyurethane paint, hot-dip galvanize or thermal spray; phosphating suits fasteners and machined parts.
Can 10G2S1 be formed, bent or molded?
Good cold bending and press-braking with bend radii ≥2t; hot forming 850–1150 °C followed by normalizing restores toughness after heavy deformation.
What is the maximum service temperature of 10G2S1?
10G2S1 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 10G2S1-HR and 10G2S1-CD?
HR is the default condition — default mill condition for welded structural plate and sections at strength class 345. CD: pick for close tolerance bar or strip where extra strength and surface finish matter more than ductility. Yield strength is 360 MPa in HR versus 480 MPa in CD.
How much does 10G2S1 cost?
10G2S1 is a budget-cost steel ($), cheaper than about 90% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- GOST 19281-2014 — Low-alloy rolled steel of high strength. General specifications — Rosstandart (2014)
- GOST 19282-73 — Low-alloy thick plate and shaped rolled steel — Gosstandart USSR (1973)
- GOST 5058-65 / GOST 5520 — Low-alloy structural and boiler steels — Gosstandart USSR (1965)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 19: Fatigue and Fracture — ASM International (1996)
- Marochnik stali i splavov — grade 10Г2С1 datasheet — Marochnik (2023)
- Mysteel / SMM structural plate price indices (Q345 equivalent) (2026)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.