
Flux and wire combination
MODEL MF-38 / US-40
- Features
- Applied for ASTM A204 Gr. A, B, C and equivalents
- Classification
- AWS A5.23 F8P6-EA3-A3, F9A6-EA3-A3
Kobelco · Model PF-200S/ US-9Cb
PF-200S/ US-9CbPF-200S/ US-9Cb Flux and wire combination. Suitable for multi-pass butt welding of 9%Cr-1%Mo-V-Nb steel Excellent creep rupture strength
Pricing, model selection, stock and delivery are confirmed in your quotation.
Individual manufacturer designation and recorded specifications sourced from the official OEM website on 10 October 2026. Supply terms, regional configuration and application suitability are confirmed by quotation. The source does not publish a separate article SKU for this record. OEM photograph unavailable; the image is explicitly labelled model-reference artwork.
| Features | Suitable for multi-pass butt welding of 9%Cr-1%Mo-V-Nb steel Excellent creep rupture strength |
|---|---|
| Classification | AWS A5.23 F10PZ-EG-G |
| Type of flux | Bonded |
| Redrying of flux | 200-300°Cx1h |
| Polarity | AC |
| Packaging data | Flux | Mesh | Can | Wire | φ mm | Spool | Coil; PF-200S | 10x48 | 20kg | US-9Cb | 1.2 | 20kg | -; | | | | 1.6 | 20kg | -; | | | | 2.4 | - | 25kg; | | | | 3.2 | - | 25kg; | | | | 4.0 | - | 25kg; Volume mm | 240W, 350H, 240L | Volume mm | 300W, 110H, 300L | 430W, 90H, 430L |
| Composition (wire mass%) | | Typical | Guaranty a; C | 0.08 | 0.14; Si | 0.13 | 0.30; Mn | 1.73 | 2.00; P | 0.005 | 0.020; S | 0.003 | 0.020; Ni | 0.57 | 1.00; Cr | 8.81 | 8.00-10.50; Mo | 0.90 | 0.80-1.20; Nb | 0.05 | 0.10; V | 0.23 | 0.50; Cu | 0.02 | 0.15; Note: a Single values are maximium. |
| Composition (weld metal mass %) | | Typical | Guaranty a; C | 0.06 | 0.12; Si | 0.12 | 0.60; Mn | 1.58 | 2.00; P | 0.008 | 0.025; S | 0.004 | 0.025; Ni | 0.55 | 1.00; Cr | 8.31 | 8.00-10.50; Mo | 0.88 | 0.80-1.20; Nb | 0.03 | 0.15; V | 0.21 | 0.50; Note: a Single values are maximium. |
| Weld mechanical properties | | Typical | Guaranty; 0.2%YS (MPa) | 580 | 607min.; TS (MPa) | 710 | 690-827; EI on 4d (%) | 24 | 16min.; IV 0°C (J) | 68 | -; PWHT (°Cxh) | 740x8 | 745±15x1 |
Suitable for multi-pass butt welding of 9%Cr-1%Mo-V-Nb steel
Excellent creep rupture strength
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The model shown identifies the manufacturer product. Stock, variant, pricing and delivery are confirmed in the quotation.

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