Precision Hot Forging — Exported to Germany
Shivam Forge supplies near-net-shape precision hot forgings to Germany — closed-die automotive forgings, gear blanks, valve bodies, and complex profiles in DIN EN alloy steels. Tight flash control, controlled grain flow, EN 10204 3.1 certified. PPAP/ISIR documentation. CIF Hamburg in EUR. 30–40% below German domestic precision forging prices.
German engineering is synonymous with precision — and the same standard applies to the forged components that go into German-engineered machinery, vehicles, and industrial equipment. Precision hot forging — closed-die forging to near-net-shape with tight dimensional tolerances, controlled grain flow, and verified mechanical properties — reduces downstream machining costs and improves fatigue life versus machined-from-bar alternatives. Shivam Forge in Rajkot specialises in precision closed-die forgings for German buyers: flash-controlled impressions, first-article CMM approval, DIN EN material grades, and full EN 10204 3.1 documentation.
Precision closed-die gear blank forgings in 20MnCr5, 16MnCr5, or 42CrMo4 for automotive transmissions and industrial gearboxes. OD tolerance ±0.8 mm from forging; tooth profile rough-formed with ≤2.5 mm machining stock per flank. Bore pre-drilled or rough-machined as option. Controlled flash in die impression eliminates heavy trimming. EN 10084 or EN 10083 certification.
Complex closed-die steering knuckle and wheel hub forgings requiring precise parting line, controlled underfill, and accurate flash placement. 42CrMo4 in Q+T condition. 3D CAD (STEP) model used for die design — die face follows part geometry to achieve near-net shape. CMM first-article report to ±0.05 mm on functional faces. PPAP Level 3 ISIR documentation.
Precision connecting rod forgings in 42CrMo4 or 36CrNiMo4 for automotive and industrial engine applications. I-section profiles with tight I-beam proportions for optimised stiffness-to-weight. Weight-sorted sets: ±3 g matching tolerance within batch. Big-end bore rough-machined on request. Fracture-split (cracked-cap) forging geometry achievable. EN 10204 3.1 with piece-level traceability.
Precision weld-neck, slip-on, socket-weld, and blind flange forgings to DIN EN 1092-1 dimensions in C45, 42CrMo4, and SS 316L. Seating face machined to Ra ≤3.2 µm (raised face) or Ra ≤1.6 µm (RTJ). Bolt hole pattern drilled on CNC machining centre to ±0.1 mm positional tolerance. Pressure rating PN 16 to PN 160 range. EN 10204 3.1 with pressure class identification.
Forged valve body blanks in C45, 42CrMo4, or SS 316L for globe, gate, ball, and check valve applications. Complex multi-port body profiles in closed die. Internal cavity rough-machined or drilled; sealing face areas left with minimum 3 mm machining stock. Wall thickness variation ±1.5 mm. 100% pressure test on finished valve bodies post-machining at customer site.
CNC-turned shaft forgings in 42CrMo4 Q+T with bearing journals turned to h6 (OD tolerance +0/−0.016 mm for 50–80 mm dia), key seat milled to DIN 6885 dimensions, and thread machined per DIN 13. Runout ≤0.02 mm TIR over journal span. Surface finish Ra ≤1.6 µm on bearing surfaces. Delivered as finished-machined, ready for bearing assembly.
Our die design team works from customer 3D models (STEP/IGS) or 2D DIN drawings. Die impression contoured for maximum material filling with minimum excess flash — reducing scrap and downstream machining. Draft angles 1–3° for complex profiles; 5–7° for standard. Die steel H13 (1.2344), EDM-finished impression for Ra ≤3.2 µm cavity surface. FEA-based die stress analysis for high-volume dies.
First-article inspection per AIAG PPAP Level 3 or VDA First-Article Report format: 100% dimensional measurement of all drawing callouts on 5 production pieces, material test certificate (EN 10204 3.1), process FMEA for new forging, control plan with measurement method and frequency, and Cpk data (≥1.33 minimum) for all dimensions marked 'critical characteristic'. Report signed and archived.
For production runs ≥500 pieces, SPC is applied to dimensions designated 'critical characteristic' on customer drawing. X-bar/R charts monitored in real time on the production line. Out-of-control signals trigger immediate production stop and root-cause investigation. SPC data available to customer on request. Process capability targets: Cpk ≥1.33 (standard), ≥1.67 for safety-critical characteristics.
Brown & Sharpe CMM with Renishaw TP20 touch probe. 3D surface scanning for complex forging profiles against STEP reference model. Profile deviation reported as colour map and tabular data. All critical dimensions measured; summary table with pass/fail per tolerance band. Measurement uncertainty calculated per DIN EN ISO/IEC 17025. CMM calibration certificate maintained and provided on request.
Brinell hardness (HBW) measured per ISO 6506 on minimum 3 positions per piece for all Q+T forgings. For case-hardened components (16MnCr5, 20MnCr5), Vickers (HV) microhardness traverse from surface to core on representative sacrificial sample from each batch. Effective case depth to HV 550 reported. Rockwell HRC on cross-sectional sacrificial sample for surface-hardened journal areas.
For critical precision forgings (connecting rods, crankshafts, steering knuckles), macro etching of a cross-sectional slice from the first-article batch demonstrates grain flow alignment with the load-bearing geometry. Etching per DIN 50602 with Fry's reagent (for alloy steel) or Oberhoffer reagent. Macro photograph archived in first-article record and provided on customer request for fatigue analysis validation.
Precision hot forging is distinct from general hot forging in that the die impression, process control, and documentation are all engineered specifically to minimise post-forging machining while guaranteeing dimensional consistency and metallurgical quality. For German buyers — accustomed to the highest engineering standards in the world — precision forging from India means near-net-shape closed-die output (≤2.5 mm machining stock per face), controlled grain flow aligned to the load-bearing geometry, EN 10204 3.1 material certification, and PPAP-equivalent first-article inspection documentation. Shivam Forge delivers all of these from Rajkot.
The economic case for precision forgings from India versus Germany is strongest on medium to high-volume production programs (500+ pieces/year). Tooling investment (€2,000–20,000 per die set depending on complexity) is recovered over the production volume. Once tooling is paid off, piece-part savings are 30–40% versus equivalent German domestic precision forging. For a German Tier 2 automotive supplier consuming 5,000 connecting rod forgings per year at a saving of €15/piece, the annual saving is €75,000 — covering tooling recovery and delivering significant ongoing margin improvement.
Shivam Forge's precision forging process for German export components follows a documented quality plan. Customer 3D model or 2D DIN drawing is reviewed by our die design team, who optimise the die impression for near-net-shape material utilisation and correct grain flow. Die is machined from H13 tool steel (1.2344) with EDM-finished impression surfaces. First production lot is measured 100% on CMM against drawing tolerances; Cpk calculated for all critical characteristics. First-article report (ISIR) is submitted for customer approval before production release. SPC monitoring is applied to critical dimensions throughout the production run.
For German buyers evaluating precision forging supply from India for the first time, the first-article process is the key confidence-building step. Shivam Forge sends first-article forged pieces by air freight (Frankfurt or Hamburg, 2–3 days from Rajkot) along with the ISIR documentation package. Your quality team evaluates dimensional conformance, material certificate quality, and grain flow documentation. Once approved, production quantities ship by ocean freight (CIF Hamburg, 15–20 days), with buffer stock held in Rajkot for call-off delivery. Contact sales@shivamforge.com to start the first-article process — CIF Hamburg quotation with tooling and piece price within 24 hours.
Standard closed-die forging dimensional tolerance: ±0.5–1.5 mm on linear dimensions depending on forging weight and geometry (per DIN 7526 or EN 10243-1 tolerance class E). Flash allowance ±0.5 mm. With careful die design and CNC-machined die impressions, we achieve near-net shape with ≤2.5 mm machining stock per forging face — reducing downstream machining time significantly.
Yes. We produce Initial Sample Inspection Reports (ISIR) aligned with AIAG PPAP Level 3: 100% dimensional measurement of all drawing callouts (5 pieces), EN 10204 3.1 material certificate, process FMEA summary, control plan, and Cpk data for critical characteristics. For VDA-format first-article documentation, we work with your supplier development team to meet specific requirements.
Our target Cpk for dimensions designated as 'critical characteristics' is ≥1.33 (minimum) to ≥1.67 (for safety-critical characteristics at German OEM specification). For new forgings, we perform a measurement system analysis (MSA / Gage R&R) on the measurement method for critical dimensions before production SPC is applied. Cpk data from initial production batch is included in the ISIR.
We accept both 3D STEP/IGES models and 2D DIN-format drawings. For complex precision forgings (knuckles, connecting rods), 3D STEP is preferred for die design and CMM inspection programming. For standard shapes (flanges, shafts), 2D drawings are sufficient. We use SolidWorks for die design and PCDMIS for CMM inspection programming — both are compatible with customer CAD files.
Yes. For safety-critical precision forgings (connecting rods, steering knuckles, wheel hubs), we perform macro etching on a cross-sectional sacrificial slice from the first-article batch to demonstrate grain flow alignment. Photograph and etching documentation are provided in the first-article record. Grain flow aligned to part geometry is a fundamental advantage of forging versus machining from bar — we document this for German automotive quality engineers.
New closed-die tooling: 4–8 weeks depending on complexity. Simple profiles (flanges, coupling hubs, round forgings): 3–5 weeks. Complex profiles (connecting rods, knuckles, multi-cavity dies): 6–10 weeks. We provide a 3D die drawing for customer approval before machining. Die warranty: we guarantee die performance for the agreed production volume, with die repair at our cost for defect-related failures.
Tooling cost depends on die complexity and press tonnage. For simple closed-die forgings (0.5–5 kg weight): €1,500–4,000 per die set. For complex multi-cavity dies (connecting rods, knuckles): €5,000–20,000. Tooling cost is quoted separately from piece price and amortised over the agreed production volume, or paid upfront for short-run projects. EUR-denominated tooling quotation provided.
Yes. SS 316L (1.4404) and SS 316Ti (1.4571) precision forgings for pharmaceutical equipment (BPE standard) and food processing machinery in Germany. Solution-annealed condition, EN 10088-3 certification, EN 10228-2 PT inspection. Electropolishing for hygienic surface finish (Ra ≤0.4 µm interior surfaces) available through our sub-contractor. EU food-contact material declaration provided.
Why Choose Shivam Forge
Shivam Forge delivers precision hot-forged components from our integrated Shapar, Rajkot facility — covering forging, CNC machining, heat treatment, and quality inspection under one roof.
