Steel GE200 +SR (Stress relieved)
Heat-treated state
EN 1.0420
Use when dimensional stability after machining or welding matters but full grain refinement is not required.
Values for the +SR condition
Other GE200 tempers and conditions
GE200 is listed in 5 conditions; see the grade overview at GE200.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Pick for maximum machinability and lowest hardness on parts with heavy metal removal. | 210 | 400 | 29 | 115 HB | 10 % IACS |
+SRThis page Stress relieved | Use when dimensional stability after machining or welding matters but full grain refinement is not required. | 215 | 420 | 24 | 125 HB | 10 % IACS |
As fabricated | Cheapest condition for non-critical, lightly loaded parts where coarse as-cast grain and residual stress are acceptable. | 220 | 430 | 22 | 130 HB | 10 % IACS |
+NDefault Normalized | Standard supply condition of EN 10293 GE200 — refined grain, guaranteed 200 MPa yield and 27 J impact. | 230 | 440 | 27 | 125 HB | — |
Normalized and tempered | Choose for thick-section castings needing the best toughness and lowest residual stress at the same strength level. | 235 | 430 | 29 | 122 HB | 10 % IACS |
What is GE200 +SR?
GE200 +SR is GE200 heat treated to +SR — use when dimensional stability after machining or welding matters but full grain refinement is not required. GE200 +SR has a yield strength of 215 MPa (31.2 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 98% of steel grades. Elongation at break is 24% and the elastic modulus is 208 GPa (30.2 Msi). GE200 +SR 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). +N is the default condition FabDigit quotes; +SR is available on request or by drawing note.
Advantages
- Easy to machine — 66/100, better than 95% of steel grades
- Conducts heat well — 50 W/m·K (28.9 BTU/hr·ft·°F), better than 87% of steel grades
- Readily welded — 88/100, better than 87% of steel grades
- High electrical conductivity — 10 % IACS, better than 83% of steel grades
Limitations
- Low strength — 215 MPa (31.2 ksi), worse than 98% of steel grades
- Limited formability — 18/100, worse than 84% of steel grades
GE200 +SR properties
Typical room-temperature values for GE200 +SR; 22 are specific to this condition. Other listed values are GE200 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
GE200 +SR 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
GE200 +SR has a yield strength of 215 MPa (31.2 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 98% of steel grades. Elongation at break is 24% and the elastic modulus is 208 GPa (30.2 Msi).
Thermal6
GE200 +SR is rated for continuous service to 400°C (752 °F). It conducts heat at 50 W/m·K (28.9 BTU/hr·ft·°F), better than 87% of steel grades. Thermal expansion is 12 µm/m·K (6.67 µin/in·°F).
Electrical3
GE200 +SR conducts electricity at 10 % IACS, better than 83% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (12/100), worse than 53% of steel grades.
Sustainability4
Producing a kilogram of GE200 +SR takes about 26 MJ of energy and emits 2 kg of CO₂ — less than 64% of steel grades. Typical recycled content is 80%.
Manufacturability7
GE200 +SR's machinability is good (66/100, better than 95% of steel grades); weldability excellent (88/100); formability poor (18/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with GE200 +SR
Is GE200 easy to machine?
Machines like normalized 1020–1025 steel (~70 % of AISI 1212); use positive-rake carbide, moderate speeds, and expect built-up edge with gummy annealed material — remove the cast skin/sand in a first heavy cut.
Can GE200 be welded?
Very good weldability (C ≤ 0.23, CEV ≤ 0.45): SMAW/GMAW with low-hydrogen consumables, preheat 100–150 °C only for sections above ~30 mm; post-weld stress relief at 580–620 °C recommended for repair-welded castings.
Can GE200 be formed, bent or molded?
Green-sand, furan or shell moulding all work; fluidity is good but the alloy has ~2 % solidification shrinkage — use generous risers, chills at heavy junctions and normalize afterwards to break up as-cast dendritic grain.
What surface finishes work on GE200?
No inherent corrosion resistance — shot blast, then phosphate + primer/paint, zinc-rich coating or hot-dip galvanizing; takes electroplating and flame/induction hardening poorly (low C), and polishing quality is limited by subsurface porosity.
GE200 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 |
|---|---|---|
| CCEV ≤ 0.45 for guaranteed weldability | ≤ 0.23 | 0.18 |
| Si | ≤ 0.6 | 0.4 |
| Mn | 0.5 – 1.2 | 0.9 |
| P | ≤ 0.03 | 0.02 |
| S | ≤ 0.03 | 0.02 |
| Crresidual element | ≤ 0.3 | 0.1 |
| Niresidual element | ≤ 0.4 | 0.15 |
| Moresidual element | ≤ 0.12 | 0.03 |
| Curesidual element | ≤ 0.3 | 0.15 |
| Vresidual element | ≤ 0.03 | 0.01 |
| Fetotal residuals (Cr+Ni+Mo+Cu+V) ≤ 1.00 % | balance | — |
GE200 +SR — frequently asked
What is GE200 +SR used for?
GE200 +SR is typically used for machine housings, brackets and low-stress structural castings. In short: most weldable cast carbon steel; low-stress general engineering castings; easy-machining low-carbon casting.
What is the yield strength of GE200 +SR?
GE200 +SR has a typical yield strength of 215 MPa (31.2 ksi) and a tensile strength of 420 MPa (60.9 ksi) — weaker than 98% of steel grades. Strength varies by condition: see the 5 listed tempers.
Is GE200 +SR easy to machine?
Reasonably — machinability is rated good (66/100, better than 95% of steel grades). Machines like normalized 1020–1025 steel (~70 % of AISI 1212); use positive-rake carbide, moderate speeds, and expect built-up edge with gummy annealed material — remove the cast skin/sand in a first heavy cut.
Can GE200 +SR be welded?
Yes — weldability is rated excellent (88/100). Very good weldability (C ≤ 0.23, CEV ≤ 0.45): SMAW/GMAW with low-hydrogen consumables, preheat 100–150 °C only for sections above ~30 mm; post-weld stress relief at 580–620 °C recommended for repair-welded castings.
What surface finishes work on GE200 +SR?
No inherent corrosion resistance — shot blast, then phosphate + primer/paint, zinc-rich coating or hot-dip galvanizing; takes electroplating and flame/induction hardening poorly (low C), and polishing quality is limited by subsurface porosity.
Can GE200 +SR be formed, bent or molded?
Green-sand, furan or shell moulding all work; fluidity is good but the alloy has ~2 % solidification shrinkage — use generous risers, chills at heavy junctions and normalize afterwards to break up as-cast dendritic grain.
What is the maximum service temperature of GE200 +SR?
GE200 +SR 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 GE200 +N and GE200-F?
+N is the default condition — standard supply condition of EN 10293 GE200 — refined grain, guaranteed 200 MPa yield and 27 J impact. F: cheapest condition for non-critical, lightly loaded parts where coarse as-cast grain and residual stress are acceptable. Yield strength is 230 MPa in +N versus 220 MPa in F.
Sources
- EN 10293 — Steel castings for general engineering uses — CEN (2015)
- EN 10340 — Steel castings for structural uses — CEN (2007)
- GB/T 11352 — (ZG200-400 comparable) — SAC (2009)
- Steel Castings Handbook, 6th ed. — Steel Founders' Society of America / ASM (1995)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.15 — Casting — ASM International (2008)
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.