Steel G28Mn6
EN 1.1165
G28Mn6 (1.1165) is a higher-carbon manganese cast steel that trades weldability for strength and wear resistance, supplied in +N, +QT1 or +QT2 condition.
Reference datasheet — G28Mn6 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
G28Mn6 tempers and conditions
G28Mn6 is supplied in 3 conditions, soft to hard. +N is the default FabDigit quotes; the values on this page are for it.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
+NDefault Normalized | Standard, lowest-cost delivery condition for heavy structural and railway castings where 300 MPa yield and good weldability are sufficient. | 340 | 620 | 20 | 180 HB | — |
Quenched and tempered, lower strength class | Pick when higher yield strength and low-temperature toughness are needed but the casting still has to be welded and machined. | 490 | 720 | 17 | 19 HRC | — |
Quenched and tempered, higher strength class | Highest-strength delivery condition for wear-loaded, impact-loaded castings (sprockets, links, crusher parts) where ductility can be traded for strength. | 600 | 820 | 13 | 25 HRC | — |
What is G28Mn6?
G28Mn6 (1.1165) is a higher-carbon manganese cast steel that trades weldability for strength and wear resistance, supplied in +N, +QT1 or +QT2 condition. Default-condition values are 340 MPa yield, 620 MPa tensile, 20% elongation and about 180 HB (89 HRB), with service to 400 °C; it is used for heavy structural and railway castings under impact loading. Weldability is the main constraint (score 58, CE ≈ 0.55), requiring 150–250 °C preheat and PWHT on thick sections, and corrosion resistance is negligible (score 12). G24Mn6 is the alternative when higher yield strength with better weld behaviour is preferred. G28Mn6 has a density of 7.83 g/cm³ (0.283 lb/in³), lighter than 80% of steel grades. It melts at 1,425°C (2,597 °F). G28Mn6 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 76% of steel grades. Elongation at break is 20% and the elastic modulus is 210 GPa (30.5 Msi).
What is G28Mn6 used for?
- Railway wheels and couplers
- Heavy structural castings
- Impact-resistant machine parts
Advantages
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
Limitations
- Hard to polish — 45/100, worse than 84% of steel grades
- Limited formability — 20/100, worse than 80% of steel grades
- Low strength — 340 MPa (49.3 ksi), worse than 76% of steel grades
G28Mn6 properties
Typical room-temperature values for G28Mn6-+N; bars are the position among steel grades.
Physical3
G28Mn6 has a density of 7.83 g/cm³ (0.283 lb/in³), lighter than 80% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical16
G28Mn6 has a yield strength of 340 MPa (49.3 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 76% of steel grades. Elongation at break is 20% and the elastic modulus is 210 GPa (30.5 Msi).
Thermal6
G28Mn6 is rated for continuous service to 400°C (752 °F). It conducts heat at 44 W/m·K (25.4 BTU/hr·ft·°F), better than 57% of steel grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
G28Mn6 conducts electricity at 8.6 % IACS, better than 66% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of G28Mn6 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
G28Mn6's machinability is good (55/100, better than 62% of steel grades); weldability good (58/100); formability poor (20/100).
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. G28Mn6 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with G28Mn6
Is G28Mn6 easy to machine?
Machines like a 1330/30Mn wrought steel — carbide tools, 100–150 m/min in +N, reduce ~30 % in +QT2; remove the cast skin with a heavy first cut to avoid sand/oxide tool wear.
Can G28Mn6 be welded?
Weldable with low-hydrogen SMAW/FCAW or MAG using E7018-type consumables, but CE ≈ 0.55 demands 150–250 °C preheat/interpass and PWHT at 580–620 °C for thick sections.
Can G28Mn6 be formed, bent or molded?
Supplied as sand or investment castings; feed heavy sections with risers and chills, normalize at 880–920 °C or quench from 870–900 °C and temper 550–680 °C to the required QT class.
G28Mn6 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 |
|---|---|---|
| CEN 10293 ladle analysis | 0.25 – 0.32 | 0.28 |
| Si | ≤ 0.6 | 0.4 |
| Mn | 1.2 – 1.6 | 1.4 |
| P | ≤ 0.02 | 0.01 |
| Ssome standards allow 0.020 | ≤ 0.02 | 0.01 |
| Crresidual | ≤ 0.3 | 0.15 |
| Moresidual | ≤ 0.12 | 0.05 |
| Niresidual | ≤ 0.4 | 0.2 |
| Curesidual | ≤ 0.3 | 0.15 |
| Vresidual | ≤ 0.05 | 0.02 |
| Fe | balance |
What surface finishes work on G28Mn6?
Shot-blast, then phosphate + primer, zinc-rich or hot-dip galvanizing for outdoor use; flame or induction hardening is possible on wear faces up to ~50 HRC.
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 G28Mn6 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- 1.1165
How much does G28Mn6 cost?
G28Mn6 is a standard-cost steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
G28Mn6 — frequently asked
What is G28Mn6 used for?
G28Mn6 is typically used for railway wheels and couplers, heavy structural castings and impact-resistant machine parts. In short: wear-resistant Mn cast steel; impact-duty railway grade; lower weldability than G24Mn6.
What is the yield strength of G28Mn6?
G28Mn6 has a typical yield strength of 340 MPa (49.3 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 76% of steel grades. Strength varies by condition: see the 3 listed tempers.
Is G28Mn6 easy to machine?
Reasonably — machinability is rated good (55/100, better than 62% of steel grades). Machines like a 1330/30Mn wrought steel — carbide tools, 100–150 m/min in +N, reduce ~30 % in +QT2; remove the cast skin with a heavy first cut to avoid sand/oxide tool wear.
Can G28Mn6 be welded?
Yes — weldability is rated good (58/100). Weldable with low-hydrogen SMAW/FCAW or MAG using E7018-type consumables, but CE ≈ 0.55 demands 150–250 °C preheat/interpass and PWHT at 580–620 °C for thick sections.
What surface finishes work on G28Mn6?
Shot-blast, then phosphate + primer, zinc-rich or hot-dip galvanizing for outdoor use; flame or induction hardening is possible on wear faces up to ~50 HRC.
Can G28Mn6 be formed, bent or molded?
Supplied as sand or investment castings; feed heavy sections with risers and chills, normalize at 880–920 °C or quench from 870–900 °C and temper 550–680 °C to the required QT class.
What is the maximum service temperature of G28Mn6?
G28Mn6 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does G28Mn6 cost?
G28Mn6 is a standard-cost steel ($$), 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)
- EN 10027-2 — Material number 1.1165 — CEN (2015)
- 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)
- EN 1011-2 — Welding recommendations for ferritic steels — CEN (2001)
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.