Steel GE270
EN 1.0454
GE270 (1.0454) is a general engineering cast carbon steel of moderate strength, offered as-cast, stress-relieved, annealed, normalized, normalized-and-tempered or quenched-and-tempered.
Reference datasheet — GE270 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 +N condition
GE270 tempers and conditions
GE270 is supplied in 6 conditions, soft to hard. +N is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest and most machinable condition; use when maximum machinability and lowest hardness are wanted and strength is secondary. | 255 | 480 | 23 | 140 HB | 10.5 % IACS |
As fabricated | Cheapest condition for lightly loaded, non-critical castings where residual stresses and coarse as-cast structure are tolerable. | 270 | 490 | 16 | 150 HB | 10 % IACS |
Stress relieved | Choose when dimensional stability after welding or heavy machining matters but full normalizing is not required. | 275 | 495 | 18 | 148 HB | 10 % IACS |
+NDefault Normalized | Standard stocked condition: refined grain, uniform properties through the section and reliable Rp0.2 ≥ 270 MPa. | 295 | 520 | 20 | 155 HB | — |
Normalized and tempered | Pick when normalized strength plus improved toughness and lower residual stress are needed, e.g. welded structural castings. | 305 | 525 | 22 | 158 HB | 10 % IACS |
Quenched and tempered | Highest strength and impact energy for thinner-walled, more highly loaded castings; hardenability is limited by the low carbon/alloy content. | 400 | 610 | 19 | 190 HB | — |
What is GE270?
GE270 (1.0454) is a general engineering cast carbon steel of moderate strength, offered as-cast, stress-relieved, annealed, normalized, normalized-and-tempered or quenched-and-tempered. In the default condition it provides 295 MPa yield, 520 MPa tensile, 20 % elongation and about 155 HB (82 HRB), which suits structural and mechanical castings needing more strength than GE240. Service is limited to 400 °C and the alloy has no corrosion resistance, so protective coatings are required; GE300 is the next higher-strength option. GE270 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). GE270 has a yield strength of 295 MPa (42.8 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 87% of steel grades. Elongation at break is 20% and the elastic modulus is 210 GPa (30.5 Msi).
What is GE270 used for?
- Structural machine castings
- Housings
- Frames
Advantages
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
- High electrical conductivity — 10 % IACS, better than 83% of steel grades
- Conducts heat well — 48 W/m·K (27.7 BTU/hr·ft·°F), better than 79% of steel grades
- Readily welded — 78/100, better than 78% of steel grades
Limitations
- Low strength — 295 MPa (42.8 ksi), worse than 87% of steel grades
- Limited formability — 15/100, worse than 87% of steel grades
GE270 properties
Typical room-temperature values for GE270-+N; bars are the position among steel grades.
Physical3
GE270 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
GE270 has a yield strength of 295 MPa (42.8 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 87% of steel grades. Elongation at break is 20% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
GE270 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 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
GE270 conducts electricity at 10 % IACS, better than 83% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of GE270 takes about 24 MJ of energy and emits 1.9 kg of CO₂ — less than 97% of steel grades. Typical recycled content is 85%.
Manufacturability8
GE270's machinability is good (60/100, better than 83% of steel grades); weldability very good (78/100); formability poor (15/100).
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. GE270 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with GE270
Is GE270 easy to machine?
Machines like normalized 1020–1030 wrought steel at ~65 % of AISI 1212; remove the sand/scale skin first with a rigid setup and coated carbide, and expect gummy chips in the annealed condition.
Can GE270 be welded?
Readily weldable by SMAW/GMAW/SAW with E70xx-class low-hydrogen consumables; preheat 100–150 °C for sections over ~30 mm and post-weld stress relieve or re-normalize repaired areas.
Can GE270 be formed, bent or molded?
Green-sand, resin-sand or investment casting with generous risering — steel's high shrinkage (~2 %) demands directional solidification and adequate fillets to avoid hot tears.
GE270 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 |
|---|---|---|
| Ckept low for weldability; CE typically ≤0.45 | ≤ 0.25 | 0.22 |
| Si | 0.2 – 0.6 | 0.4 |
| Mnmain strengthening addition vs GE240 | 0.5 – 1.2 | 0.95 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.03 | 0.02 |
| Crresidual | ≤ 0.3 | 0.1 |
| Niresidual | ≤ 0.4 | 0.15 |
| Moresidual | ≤ 0.15 | 0.04 |
| Curesidual | ≤ 0.3 | 0.1 |
| Vresidual | ≤ 0.05 | 0.01 |
| Fe | balance |
What surface finishes work on GE270?
Not anodizable; shot-blast then prime/paint, phosphate, zinc-plate or hot-dip galvanize for corrosion protection, and machine bearing surfaces where a fine finish is needed.
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
Equivalent designations
Standards and trade names that resolve to Steel GE270 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.0454
How much does GE270 cost?
GE270 is a standard-cost steel ($$), cheaper than about 71% 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.
GE270 — frequently asked
What is GE270 used for?
GE270 is typically used for structural machine castings, housings and frames. In short: mid-range strength cast steel; stronger than GE240; weldable structural castings.
What is the yield strength of GE270?
GE270 has a typical yield strength of 295 MPa (42.8 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 87% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is GE270 easy to machine?
Reasonably — machinability is rated good (60/100, better than 83% of steel grades). Machines like normalized 1020–1030 wrought steel at ~65 % of AISI 1212; remove the sand/scale skin first with a rigid setup and coated carbide, and expect gummy chips in the annealed condition.
Can GE270 be welded?
Yes — weldability is rated very good (78/100). Readily weldable by SMAW/GMAW/SAW with E70xx-class low-hydrogen consumables; preheat 100–150 °C for sections over ~30 mm and post-weld stress relieve or re-normalize repaired areas.
What surface finishes work on GE270?
Not anodizable; shot-blast then prime/paint, phosphate, zinc-plate or hot-dip galvanize for corrosion protection, and machine bearing surfaces where a fine finish is needed.
Can GE270 be formed, bent or molded?
Green-sand, resin-sand or investment casting with generous risering — steel's high shrinkage (~2 %) demands directional solidification and adequate fillets to avoid hot tears.
What is the maximum service temperature of GE270?
GE270 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 GE270 +N and GE270-F?
+N is the default condition — standard stocked condition: refined grain, uniform properties through the section and reliable Rp0.2 ≥ 270 MPa. F: cheapest condition for lightly loaded, non-critical castings where residual stresses and coarse as-cast structure are tolerable. Yield strength is 295 MPa in +N versus 270 MPa in F.
How much does GE270 cost?
GE270 is a standard-cost steel ($$), cheaper than about 71% 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
- EN 10293 — Steel castings for general engineering uses — CEN (2015)
- ISO 3755 — Cast carbon steels for general engineering purposes — ISO (1991)
- DIN 1681 — Cast steels for general engineering purposes (GS-45/GS-52) — DIN (1985)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- Steel Castings Handbook, 6th ed. — Steel Founders' Society of America / ASM (1995)
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.